diff options
Diffstat (limited to 'fs')
77 files changed, 2447 insertions, 1950 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index d5990eb160bd..02781e78ffb6 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -341,6 +341,7 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, struct msghdr msg; struct kvec iov[1]; size_t offset; + s64 tx_total_len; u32 abort_code; int ret; @@ -364,9 +365,20 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, srx.transport.sin.sin_port = call->port; memcpy(&srx.transport.sin.sin_addr, addr, 4); + /* Work out the length we're going to transmit. This is awkward for + * calls such as FS.StoreData where there's an extra injection of data + * after the initial fixed part. + */ + tx_total_len = call->request_size; + if (call->send_pages) { + tx_total_len += call->last_to - call->first_offset; + tx_total_len += (call->last - call->first) * PAGE_SIZE; + } + /* create a call */ rxcall = rxrpc_kernel_begin_call(afs_socket, &srx, call->key, - (unsigned long) call, gfp, + (unsigned long)call, + tx_total_len, gfp, (async ? afs_wake_up_async_call : afs_wake_up_call_waiter)); @@ -738,6 +750,8 @@ void afs_send_empty_reply(struct afs_call *call) _enter(""); + rxrpc_kernel_set_tx_length(afs_socket, call->rxcall, 0); + msg.msg_name = NULL; msg.msg_namelen = 0; iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, NULL, 0, 0); @@ -772,6 +786,8 @@ void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len) _enter(""); + rxrpc_kernel_set_tx_length(afs_socket, call->rxcall, len); + iov[0].iov_base = (void *) buf; iov[0].iov_len = len; msg.msg_name = NULL; diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c index 247b8dfaf6e5..8d8370ddb6b2 100644 --- a/fs/btrfs/acl.c +++ b/fs/btrfs/acl.c @@ -78,12 +78,6 @@ static int __btrfs_set_acl(struct btrfs_trans_handle *trans, switch (type) { case ACL_TYPE_ACCESS: name = XATTR_NAME_POSIX_ACL_ACCESS; - if (acl) { - ret = posix_acl_update_mode(inode, &inode->i_mode, &acl); - if (ret) - return ret; - } - ret = 0; break; case ACL_TYPE_DEFAULT: if (!S_ISDIR(inode->i_mode)) @@ -119,6 +113,13 @@ out: int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) { + int ret; + + if (type == ACL_TYPE_ACCESS && acl) { + ret = posix_acl_update_mode(inode, &inode->i_mode, &acl); + if (ret) + return ret; + } return __btrfs_set_acl(NULL, inode, acl, type); } diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 24865da63d8f..f723c11bb763 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -16,7 +16,7 @@ * Boston, MA 021110-1307, USA. */ -#include <linux/vmalloc.h> +#include <linux/mm.h> #include <linux/rbtree.h> #include "ctree.h" #include "disk-io.h" @@ -2305,7 +2305,7 @@ struct btrfs_data_container *init_data_container(u32 total_bytes) size_t alloc_bytes; alloc_bytes = max_t(size_t, total_bytes, sizeof(*data)); - data = vmalloc(alloc_bytes); + data = kvmalloc(alloc_bytes, GFP_KERNEL); if (!data) return ERR_PTR(-ENOMEM); @@ -2339,9 +2339,9 @@ struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root, if (IS_ERR(fspath)) return (void *)fspath; - ifp = kmalloc(sizeof(*ifp), GFP_NOFS); + ifp = kmalloc(sizeof(*ifp), GFP_KERNEL); if (!ifp) { - vfree(fspath); + kvfree(fspath); return ERR_PTR(-ENOMEM); } @@ -2356,6 +2356,6 @@ void free_ipath(struct inode_fs_paths *ipath) { if (!ipath) return; - vfree(ipath->fspath); + kvfree(ipath->fspath); kfree(ipath); } diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 4ded1c3f92b8..11d37c94ce05 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -94,7 +94,7 @@ #include <linux/mutex.h> #include <linux/genhd.h> #include <linux/blkdev.h> -#include <linux/vmalloc.h> +#include <linux/mm.h> #include <linux/string.h> #include "ctree.h" #include "disk-io.h" @@ -1638,12 +1638,7 @@ static int btrfsic_read_block(struct btrfsic_state *state, struct bio *bio; unsigned int j; - bio = btrfs_io_bio_alloc(GFP_NOFS, num_pages - i); - if (!bio) { - pr_info("btrfsic: bio_alloc() for %u pages failed!\n", - num_pages - i); - return -1; - } + bio = btrfs_io_bio_alloc(num_pages - i); bio->bi_bdev = block_ctx->dev->bdev; bio->bi_iter.bi_sector = dev_bytenr >> 9; bio_set_op_attrs(bio, REQ_OP_READ, 0); @@ -1668,14 +1663,8 @@ static int btrfsic_read_block(struct btrfsic_state *state, dev_bytenr += (j - i) * PAGE_SIZE; i = j; } - for (i = 0; i < num_pages; i++) { + for (i = 0; i < num_pages; i++) block_ctx->datav[i] = kmap(block_ctx->pagev[i]); - if (!block_ctx->datav[i]) { - pr_info("btrfsic: kmap() failed (dev %s)!\n", - block_ctx->dev->name); - return -1; - } - } return block_ctx->len; } @@ -2822,44 +2811,47 @@ static void __btrfsic_submit_bio(struct bio *bio) dev_state = btrfsic_dev_state_lookup(bio->bi_bdev); if (NULL != dev_state && (bio_op(bio) == REQ_OP_WRITE) && bio_has_data(bio)) { - unsigned int i; + unsigned int i = 0; u64 dev_bytenr; u64 cur_bytenr; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; int bio_is_patched; char **mapped_datav; + unsigned int segs = bio_segments(bio); dev_bytenr = 512 * bio->bi_iter.bi_sector; bio_is_patched = 0; if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) pr_info("submit_bio(rw=%d,0x%x, bi_vcnt=%u, bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n", - bio_op(bio), bio->bi_opf, bio->bi_vcnt, + bio_op(bio), bio->bi_opf, segs, (unsigned long long)bio->bi_iter.bi_sector, dev_bytenr, bio->bi_bdev); - mapped_datav = kmalloc_array(bio->bi_vcnt, + mapped_datav = kmalloc_array(segs, sizeof(*mapped_datav), GFP_NOFS); if (!mapped_datav) goto leave; cur_bytenr = dev_bytenr; - bio_for_each_segment_all(bvec, bio, i) { - BUG_ON(bvec->bv_len != PAGE_SIZE); - mapped_datav[i] = kmap(bvec->bv_page); + bio_for_each_segment(bvec, bio, iter) { + BUG_ON(bvec.bv_len != PAGE_SIZE); + mapped_datav[i] = kmap(bvec.bv_page); + i++; if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH_VERBOSE) pr_info("#%u: bytenr=%llu, len=%u, offset=%u\n", - i, cur_bytenr, bvec->bv_len, bvec->bv_offset); - cur_bytenr += bvec->bv_len; + i, cur_bytenr, bvec.bv_len, bvec.bv_offset); + cur_bytenr += bvec.bv_len; } btrfsic_process_written_block(dev_state, dev_bytenr, - mapped_datav, bio->bi_vcnt, + mapped_datav, segs, bio, &bio_is_patched, NULL, bio->bi_opf); - bio_for_each_segment_all(bvec, bio, i) - kunmap(bvec->bv_page); + bio_for_each_segment(bvec, bio, iter) + kunmap(bvec.bv_page); kfree(mapped_datav); } else if (NULL != dev_state && (bio->bi_opf & REQ_PREFLUSH)) { if (dev_state->state->print_mask & @@ -2923,13 +2915,10 @@ int btrfsic_mount(struct btrfs_fs_info *fs_info, fs_info->sectorsize, PAGE_SIZE); return -1; } - state = kzalloc(sizeof(*state), GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT); + state = kvzalloc(sizeof(*state), GFP_KERNEL); if (!state) { - state = vzalloc(sizeof(*state)); - if (!state) { - pr_info("btrfs check-integrity: vzalloc() failed!\n"); - return -1; - } + pr_info("btrfs check-integrity: allocation failed!\n"); + return -1; } if (!btrfsic_is_initialized) { diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index a2fad39f79ba..2c0b7b57fcd5 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -32,6 +32,7 @@ #include <linux/writeback.h> #include <linux/bit_spinlock.h> #include <linux/slab.h> +#include <linux/sched/mm.h> #include "ctree.h" #include "disk-io.h" #include "transaction.h" @@ -42,48 +43,7 @@ #include "extent_io.h" #include "extent_map.h" -struct compressed_bio { - /* number of bios pending for this compressed extent */ - refcount_t pending_bios; - - /* the pages with the compressed data on them */ - struct page **compressed_pages; - - /* inode that owns this data */ - struct inode *inode; - - /* starting offset in the inode for our pages */ - u64 start; - - /* number of bytes in the inode we're working on */ - unsigned long len; - - /* number of bytes on disk */ - unsigned long compressed_len; - - /* the compression algorithm for this bio */ - int compress_type; - - /* number of compressed pages in the array */ - unsigned long nr_pages; - - /* IO errors */ - int errors; - int mirror_num; - - /* for reads, this is the bio we are copying the data into */ - struct bio *orig_bio; - - /* - * the start of a variable length array of checksums only - * used by reads - */ - u32 sums; -}; - -static int btrfs_decompress_bio(int type, struct page **pages_in, - u64 disk_start, struct bio *orig_bio, - size_t srclen); +static int btrfs_decompress_bio(struct compressed_bio *cb); static inline int compressed_bio_size(struct btrfs_fs_info *fs_info, unsigned long disk_size) @@ -94,12 +54,6 @@ static inline int compressed_bio_size(struct btrfs_fs_info *fs_info, (DIV_ROUND_UP(disk_size, fs_info->sectorsize)) * csum_size; } -static struct bio *compressed_bio_alloc(struct block_device *bdev, - u64 first_byte, gfp_t gfp_flags) -{ - return btrfs_bio_alloc(bdev, first_byte >> 9, BIO_MAX_PAGES, gfp_flags); -} - static int check_compressed_csum(struct btrfs_inode *inode, struct compressed_bio *cb, u64 disk_start) @@ -173,11 +127,8 @@ static void end_compressed_bio_read(struct bio *bio) /* ok, we're the last bio for this extent, lets start * the decompression. */ - ret = btrfs_decompress_bio(cb->compress_type, - cb->compressed_pages, - cb->start, - cb->orig_bio, - cb->compressed_len); + ret = btrfs_decompress_bio(cb); + csum_failed: if (ret) cb->errors = 1; @@ -355,11 +306,7 @@ blk_status_t btrfs_submit_compressed_write(struct inode *inode, u64 start, bdev = fs_info->fs_devices->latest_bdev; - bio = compressed_bio_alloc(bdev, first_byte, GFP_NOFS); - if (!bio) { - kfree(cb); - return BLK_STS_RESOURCE; - } + bio = btrfs_bio_alloc(bdev, first_byte); bio_set_op_attrs(bio, REQ_OP_WRITE, 0); bio->bi_private = cb; bio->bi_end_io = end_compressed_bio_write; @@ -406,8 +353,7 @@ blk_status_t btrfs_submit_compressed_write(struct inode *inode, u64 start, bio_put(bio); - bio = compressed_bio_alloc(bdev, first_byte, GFP_NOFS); - BUG_ON(!bio); + bio = btrfs_bio_alloc(bdev, first_byte); bio_set_op_attrs(bio, REQ_OP_WRITE, 0); bio->bi_private = cb; bio->bi_end_io = end_compressed_bio_write; @@ -650,9 +596,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, /* include any pages we added in add_ra-bio_pages */ cb->len = bio->bi_iter.bi_size; - comp_bio = compressed_bio_alloc(bdev, cur_disk_byte, GFP_NOFS); - if (!comp_bio) - goto fail2; + comp_bio = btrfs_bio_alloc(bdev, cur_disk_byte); bio_set_op_attrs (comp_bio, REQ_OP_READ, 0); comp_bio->bi_private = cb; comp_bio->bi_end_io = end_compressed_bio_read; @@ -703,9 +647,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, bio_put(comp_bio); - comp_bio = compressed_bio_alloc(bdev, cur_disk_byte, - GFP_NOFS); - BUG_ON(!comp_bio); + comp_bio = btrfs_bio_alloc(bdev, cur_disk_byte); bio_set_op_attrs(comp_bio, REQ_OP_READ, 0); comp_bio->bi_private = cb; comp_bio->bi_end_io = end_compressed_bio_read; @@ -801,6 +743,7 @@ static struct list_head *find_workspace(int type) struct list_head *workspace; int cpus = num_online_cpus(); int idx = type - 1; + unsigned nofs_flag; struct list_head *idle_ws = &btrfs_comp_ws[idx].idle_ws; spinlock_t *ws_lock = &btrfs_comp_ws[idx].ws_lock; @@ -830,7 +773,15 @@ again: atomic_inc(total_ws); spin_unlock(ws_lock); + /* + * Allocation helpers call vmalloc that can't use GFP_NOFS, so we have + * to turn it off here because we might get called from the restricted + * context of btrfs_compress_bio/btrfs_compress_pages + */ + nofs_flag = memalloc_nofs_save(); workspace = btrfs_compress_op[idx]->alloc_workspace(); + memalloc_nofs_restore(nofs_flag); + if (IS_ERR(workspace)) { atomic_dec(total_ws); wake_up(ws_wait); @@ -961,19 +912,16 @@ int btrfs_compress_pages(int type, struct address_space *mapping, * be contiguous. They all correspond to the range of bytes covered by * the compressed extent. */ -static int btrfs_decompress_bio(int type, struct page **pages_in, - u64 disk_start, struct bio *orig_bio, - size_t srclen) +static int btrfs_decompress_bio(struct compressed_bio *cb) { struct list_head *workspace; int ret; + int type = cb->compress_type; workspace = find_workspace(type); - - ret = btrfs_compress_op[type-1]->decompress_bio(workspace, pages_in, - disk_start, orig_bio, - srclen); + ret = btrfs_compress_op[type - 1]->decompress_bio(workspace, cb); free_workspace(type, workspace); + return ret; } diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index 680d4265d601..87f6d3332163 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -34,6 +34,45 @@ /* Maximum size of data before compression */ #define BTRFS_MAX_UNCOMPRESSED (SZ_128K) +struct compressed_bio { + /* number of bios pending for this compressed extent */ + refcount_t pending_bios; + + /* the pages with the compressed data on them */ + struct page **compressed_pages; + + /* inode that owns this data */ + struct inode *inode; + + /* starting offset in the inode for our pages */ + u64 start; + + /* number of bytes in the inode we're working on */ + unsigned long len; + + /* number of bytes on disk */ + unsigned long compressed_len; + + /* the compression algorithm for this bio */ + int compress_type; + + /* number of compressed pages in the array */ + unsigned long nr_pages; + + /* IO errors */ + int errors; + int mirror_num; + + /* for reads, this is the bio we are copying the data into */ + struct bio *orig_bio; + + /* + * the start of a variable length array of checksums only + * used by reads + */ + u32 sums; +}; + void btrfs_init_compress(void); void btrfs_exit_compress(void); @@ -78,10 +117,7 @@ struct btrfs_compress_op { unsigned long *total_out); int (*decompress_bio)(struct list_head *workspace, - struct page **pages_in, - u64 disk_start, - struct bio *orig_bio, - size_t srclen); + struct compressed_bio *cb); int (*decompress)(struct list_head *workspace, unsigned char *data_in, diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index a3a75f1de002..3f4daa9d6e2c 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -19,7 +19,7 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/rbtree.h> -#include <linux/vmalloc.h> +#include <linux/mm.h> #include "ctree.h" #include "disk-io.h" #include "transaction.h" @@ -3667,14 +3667,14 @@ static noinline int __push_leaf_right(struct btrfs_fs_info *fs_info, /* make room in the right data area */ data_end = leaf_data_end(fs_info, right); memmove_extent_buffer(right, - btrfs_leaf_data(right) + data_end - push_space, - btrfs_leaf_data(right) + data_end, + BTRFS_LEAF_DATA_OFFSET + data_end - push_space, + BTRFS_LEAF_DATA_OFFSET + data_end, BTRFS_LEAF_DATA_SIZE(fs_info) - data_end); /* copy from the left data area */ - copy_extent_buffer(right, left, btrfs_leaf_data(right) + + copy_extent_buffer(right, left, BTRFS_LEAF_DATA_OFFSET + BTRFS_LEAF_DATA_SIZE(fs_info) - push_space, - btrfs_leaf_data(left) + leaf_data_end(fs_info, left), + BTRFS_LEAF_DATA_OFFSET + leaf_data_end(fs_info, left), push_space); memmove_extent_buffer(right, btrfs_item_nr_offset(push_items), @@ -3888,9 +3888,9 @@ static noinline int __push_leaf_left(struct btrfs_fs_info *fs_info, push_space = BTRFS_LEAF_DATA_SIZE(fs_info) - btrfs_item_offset_nr(right, push_items - 1); - copy_extent_buffer(left, right, btrfs_leaf_data(left) + + copy_extent_buffer(left, right, BTRFS_LEAF_DATA_OFFSET + leaf_data_end(fs_info, left) - push_space, - btrfs_leaf_data(right) + + BTRFS_LEAF_DATA_OFFSET + btrfs_item_offset_nr(right, push_items - 1), push_space); old_left_nritems = btrfs_header_nritems(left); @@ -3917,9 +3917,9 @@ static noinline int __push_leaf_left(struct btrfs_fs_info *fs_info, if (push_items < right_nritems) { push_space = btrfs_item_offset_nr(right, push_items - 1) - leaf_data_end(fs_info, right); - memmove_extent_buffer(right, btrfs_leaf_data(right) + + memmove_extent_buffer(right, BTRFS_LEAF_DATA_OFFSET + BTRFS_LEAF_DATA_SIZE(fs_info) - push_space, - btrfs_leaf_data(right) + + BTRFS_LEAF_DATA_OFFSET + leaf_data_end(fs_info, right), push_space); memmove_extent_buffer(right, btrfs_item_nr_offset(0), @@ -4069,8 +4069,8 @@ static noinline void copy_for_split(struct btrfs_trans_handle *trans, nritems * sizeof(struct btrfs_item)); copy_extent_buffer(right, l, - btrfs_leaf_data(right) + BTRFS_LEAF_DATA_SIZE(fs_info) - - data_copy_size, btrfs_leaf_data(l) + + BTRFS_LEAF_DATA_OFFSET + BTRFS_LEAF_DATA_SIZE(fs_info) - + data_copy_size, BTRFS_LEAF_DATA_OFFSET + leaf_data_end(fs_info, l), data_copy_size); rt_data_off = BTRFS_LEAF_DATA_SIZE(fs_info) - btrfs_item_end_nr(l, mid); @@ -4607,8 +4607,8 @@ void btrfs_truncate_item(struct btrfs_fs_info *fs_info, /* shift the data */ if (from_end) { - memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) + - data_end + size_diff, btrfs_leaf_data(leaf) + + memmove_extent_buffer(leaf, BTRFS_LEAF_DATA_OFFSET + + data_end + size_diff, BTRFS_LEAF_DATA_OFFSET + data_end, old_data_start + new_size - data_end); } else { struct btrfs_disk_key disk_key; @@ -4634,8 +4634,8 @@ void btrfs_truncate_item(struct btrfs_fs_info *fs_info, } } - memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) + - data_end + size_diff, btrfs_leaf_data(leaf) + + memmove_extent_buffer(leaf, BTRFS_LEAF_DATA_OFFSET + + data_end + size_diff, BTRFS_LEAF_DATA_OFFSET + data_end, old_data_start - data_end); offset = btrfs_disk_key_offset(&disk_key); @@ -4707,8 +4707,8 @@ void btrfs_extend_item(struct btrfs_fs_info *fs_info, struct btrfs_path *path, } /* shift the data */ - memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) + - data_end - data_size, btrfs_leaf_data(leaf) + + memmove_extent_buffer(leaf, BTRFS_LEAF_DATA_OFFSET + + data_end - data_size, BTRFS_LEAF_DATA_OFFSET + data_end, old_data - data_end); data_end = old_data; @@ -4790,8 +4790,8 @@ void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, (nritems - slot) * sizeof(struct btrfs_item)); /* shift the data */ - memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) + - data_end - total_data, btrfs_leaf_data(leaf) + + memmove_extent_buffer(leaf, BTRFS_LEAF_DATA_OFFSET + + data_end - total_data, BTRFS_LEAF_DATA_OFFSET + data_end, old_data - data_end); data_end = old_data; } @@ -4983,9 +4983,9 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, if (slot + nr != nritems) { int data_end = leaf_data_end(fs_info, leaf); - memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) + + memmove_extent_buffer(leaf, BTRFS_LEAF_DATA_OFFSET + data_end + dsize, - btrfs_leaf_data(leaf) + data_end, + BTRFS_LEAF_DATA_OFFSET + data_end, last_off - data_end); for (i = slot + nr; i < nritems; i++) { diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index a0d0c79d95ed..3f3eb7b17cac 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -48,7 +48,6 @@ struct btrfs_trans_handle; struct btrfs_transaction; struct btrfs_pending_snapshot; extern struct kmem_cache *btrfs_trans_handle_cachep; -extern struct kmem_cache *btrfs_transaction_cachep; extern struct kmem_cache *btrfs_bit_radix_cachep; extern struct kmem_cache *btrfs_path_cachep; extern struct kmem_cache *btrfs_free_space_cachep; @@ -716,6 +715,10 @@ struct btrfs_delayed_root; #define BTRFS_FS_BTREE_ERR 11 #define BTRFS_FS_LOG1_ERR 12 #define BTRFS_FS_LOG2_ERR 13 +#define BTRFS_FS_QUOTA_OVERRIDE 14 +/* Used to record internally whether fs has been frozen */ +#define BTRFS_FS_FROZEN 15 + /* * Indicate that a whole-filesystem exclusive operation is running * (device replace, resize, device add/delete, balance) @@ -748,8 +751,7 @@ struct btrfs_fs_info { struct rb_root block_group_cache_tree; /* keep track of unallocated space */ - spinlock_t free_chunk_lock; - u64 free_chunk_space; + atomic64_t free_chunk_space; struct extent_io_tree freed_extents[2]; struct extent_io_tree *pinned_extents; @@ -797,17 +799,7 @@ struct btrfs_fs_info { * so it is also safe. */ u64 max_inline; - /* - * Protected by ->chunk_mutex and sb->s_umount. - * - * The reason that we use two lock to protect it is because only - * remount and mount operations can change it and these two operations - * are under sb->s_umount, but the read side (chunk allocation) can not - * acquire sb->s_umount or the deadlock would happen. So we use two - * locks to protect it. On the write side, we must acquire two locks, - * and on the read side, we just need acquire one of them. - */ - u64 alloc_start; + struct btrfs_transaction *running_transaction; wait_queue_head_t transaction_throttle; wait_queue_head_t transaction_wait; @@ -1107,9 +1099,6 @@ struct btrfs_fs_info { */ struct list_head pinned_chunks; - /* Used to record internally whether fs has been frozen */ - int fs_frozen; - /* Cached block sizes */ u32 nodesize; u32 sectorsize; @@ -1277,21 +1266,20 @@ struct btrfs_root { /* For qgroup metadata space reserve */ atomic64_t qgroup_meta_rsv; }; + static inline u32 btrfs_inode_sectorsize(const struct inode *inode) { return btrfs_sb(inode->i_sb)->sectorsize; } -static inline u32 __BTRFS_LEAF_DATA_SIZE(u32 blocksize) -{ - return blocksize - sizeof(struct btrfs_header); -} - static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info) { - return __BTRFS_LEAF_DATA_SIZE(info->nodesize); + + return info->nodesize - sizeof(struct btrfs_header); } +#define BTRFS_LEAF_DATA_OFFSET offsetof(struct btrfs_leaf, items) + static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info) { return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item); @@ -1553,8 +1541,27 @@ static inline void btrfs_set_##name(type *s, u##bits val) \ s->member = cpu_to_le##bits(val); \ } + +static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, + struct btrfs_dev_item *s) +{ + BUILD_BUG_ON(sizeof(u64) != + sizeof(((struct btrfs_dev_item *)0))->total_bytes); + return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, + total_bytes)); +} +static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb, + struct btrfs_dev_item *s, + u64 val) +{ + BUILD_BUG_ON(sizeof(u64) != + sizeof(((struct btrfs_dev_item *)0))->total_bytes); + WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); + btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); +} + + BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); -BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); @@ -2324,10 +2331,6 @@ static inline int btrfs_super_csum_size(struct btrfs_super_block *s) return btrfs_csum_sizes[t]; } -static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) -{ - return offsetof(struct btrfs_leaf, items); -} /* * The leaf data grows from end-to-front in the node. @@ -2538,11 +2541,11 @@ BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, /* helper function to cast into the data area of the leaf. */ #define btrfs_item_ptr(leaf, slot, type) \ - ((type *)(btrfs_leaf_data(leaf) + \ + ((type *)(BTRFS_LEAF_DATA_OFFSET + \ btrfs_item_offset_nr(leaf, slot))) #define btrfs_item_ptr_offset(leaf, slot) \ - ((unsigned long)(btrfs_leaf_data(leaf) + \ + ((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \ btrfs_item_offset_nr(leaf, slot))) static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) @@ -2680,7 +2683,9 @@ void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache); void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache); void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info); -u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); +u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info); +u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info); +u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info); void btrfs_clear_space_info_full(struct btrfs_fs_info *info); enum btrfs_reserve_flush_enum { @@ -2703,9 +2708,13 @@ enum btrfs_flush_state { COMMIT_TRANS = 6, }; -int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len); int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); -void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len); +int btrfs_check_data_free_space(struct inode *inode, + struct extent_changeset **reserved, u64 start, u64 len); +void btrfs_free_reserved_data_space(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len); +void btrfs_delalloc_release_space(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len); void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, u64 len); void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, @@ -2722,8 +2731,8 @@ void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info, struct btrfs_block_rsv *rsv); int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes); void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes); -int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len); -void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len); +int btrfs_delalloc_reserve_space(struct inode *inode, + struct extent_changeset **reserved, u64 start, u64 len); void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info, unsigned short type); @@ -3031,12 +3040,14 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, const char *name, u16 name_len, int mod); int verify_dir_item(struct btrfs_fs_info *fs_info, - struct extent_buffer *leaf, + struct extent_buffer *leaf, int slot, struct btrfs_dir_item *dir_item); struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, struct btrfs_path *path, const char *name, int name_len); +bool btrfs_is_name_len_valid(struct extent_buffer *leaf, int slot, + unsigned long start, u16 name_len); /* orphan.c */ int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, @@ -3171,6 +3182,7 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, int btrfs_merge_bio_hook(struct page *page, unsigned long offset, size_t size, struct bio *bio, unsigned long bio_flags); +void btrfs_set_range_writeback(void *private_data, u64 start, u64 end); int btrfs_page_mkwrite(struct vm_fault *vmf); int btrfs_readpage(struct file *file, struct page *page); void btrfs_evict_inode(struct inode *inode); diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index be70d90dfee5..93ffa898df6d 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -470,7 +470,8 @@ add_tail: static noinline void update_existing_head_ref(struct btrfs_delayed_ref_root *delayed_refs, struct btrfs_delayed_ref_node *existing, - struct btrfs_delayed_ref_node *update) + struct btrfs_delayed_ref_node *update, + int *old_ref_mod_ret) { struct btrfs_delayed_ref_head *existing_ref; struct btrfs_delayed_ref_head *ref; @@ -523,6 +524,8 @@ update_existing_head_ref(struct btrfs_delayed_ref_root *delayed_refs, * currently, for refs we just added we know we're a-ok. */ old_ref_mod = existing_ref->total_ref_mod; + if (old_ref_mod_ret) + *old_ref_mod_ret = old_ref_mod; existing->ref_mod += update->ref_mod; existing_ref->total_ref_mod += update->ref_mod; @@ -550,7 +553,8 @@ add_delayed_ref_head(struct btrfs_fs_info *fs_info, struct btrfs_delayed_ref_node *ref, struct btrfs_qgroup_extent_record *qrecord, u64 bytenr, u64 num_bytes, u64 ref_root, u64 reserved, - int action, int is_data, int *qrecord_inserted_ret) + int action, int is_data, int *qrecord_inserted_ret, + int *old_ref_mod, int *new_ref_mod) { struct btrfs_delayed_ref_head *existing; struct btrfs_delayed_ref_head *head_ref = NULL; @@ -638,7 +642,8 @@ add_delayed_ref_head(struct btrfs_fs_info *fs_info, if (existing) { WARN_ON(ref_root && reserved && existing->qgroup_ref_root && existing->qgroup_reserved); - update_existing_head_ref(delayed_refs, &existing->node, ref); + update_existing_head_ref(delayed_refs, &existing->node, ref, + old_ref_mod); /* * we've updated the existing ref, free the newly * allocated ref @@ -646,6 +651,8 @@ add_delayed_ref_head(struct btrfs_fs_info *fs_info, kmem_cache_free(btrfs_delayed_ref_head_cachep, head_ref); head_ref = existing; } else { + if (old_ref_mod) + *old_ref_mod = 0; if (is_data && count_mod < 0) delayed_refs->pending_csums += num_bytes; delayed_refs->num_heads++; @@ -655,6 +662,8 @@ add_delayed_ref_head(struct btrfs_fs_info *fs_info, } if (qrecord_inserted_ret) *qrecord_inserted_ret = qrecord_inserted; + if (new_ref_mod) + *new_ref_mod = head_ref->total_ref_mod; return head_ref; } @@ -778,7 +787,8 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root, int level, int action, - struct btrfs_delayed_extent_op *extent_op) + struct btrfs_delayed_extent_op *extent_op, + int *old_ref_mod, int *new_ref_mod) { struct btrfs_delayed_tree_ref *ref; struct btrfs_delayed_ref_head *head_ref; @@ -813,7 +823,8 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info, */ head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node, record, bytenr, num_bytes, 0, 0, action, 0, - &qrecord_inserted); + &qrecord_inserted, old_ref_mod, + new_ref_mod); add_delayed_tree_ref(fs_info, trans, head_ref, &ref->node, bytenr, num_bytes, parent, ref_root, level, action); @@ -838,7 +849,8 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root, - u64 owner, u64 offset, u64 reserved, int action) + u64 owner, u64 offset, u64 reserved, int action, + int *old_ref_mod, int *new_ref_mod) { struct btrfs_delayed_data_ref *ref; struct btrfs_delayed_ref_head *head_ref; @@ -878,7 +890,8 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, */ head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node, record, bytenr, num_bytes, ref_root, reserved, - action, 1, &qrecord_inserted); + action, 1, &qrecord_inserted, + old_ref_mod, new_ref_mod); add_delayed_data_ref(fs_info, trans, head_ref, &ref->node, bytenr, num_bytes, parent, ref_root, owner, offset, @@ -909,7 +922,7 @@ int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info, add_delayed_ref_head(fs_info, trans, &head_ref->node, NULL, bytenr, num_bytes, 0, 0, BTRFS_UPDATE_DELAYED_HEAD, - extent_op->is_data, NULL); + extent_op->is_data, NULL, NULL, NULL); spin_unlock(&delayed_refs->lock); return 0; diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h index c0264ff01b53..ce88e4ac5276 100644 --- a/fs/btrfs/delayed-ref.h +++ b/fs/btrfs/delayed-ref.h @@ -247,12 +247,14 @@ int btrfs_add_delayed_tree_ref(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root, int level, int action, - struct btrfs_delayed_extent_op *extent_op); + struct btrfs_delayed_extent_op *extent_op, + int *old_ref_mod, int *new_ref_mod); int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 ref_root, - u64 owner, u64 offset, u64 reserved, int action); + u64 owner, u64 offset, u64 reserved, int action, + int *old_ref_mod, int *new_ref_mod); int btrfs_add_delayed_extent_op(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index 5fe1ca8abc70..bee3edeea7a3 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -388,7 +388,7 @@ int btrfs_dev_replace_start(struct btrfs_fs_info *fs_info, if (ret) btrfs_err(fs_info, "kobj add dev failed %d", ret); - btrfs_wait_ordered_roots(fs_info, -1, 0, (u64)-1); + btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1); /* force writing the updated state information to disk */ trans = btrfs_start_transaction(root, 0); @@ -507,7 +507,7 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info, mutex_unlock(&dev_replace->lock_finishing_cancel_unmount); return ret; } - btrfs_wait_ordered_roots(fs_info, -1, 0, (u64)-1); + btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1); trans = btrfs_start_transaction(root, 0); if (IS_ERR(trans)) { diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c index c24d615e3d7f..41cb9196eaa8 100644 --- a/fs/btrfs/dir-item.c +++ b/fs/btrfs/dir-item.c @@ -395,8 +395,6 @@ struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, leaf = path->nodes[0]; dir_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_dir_item); - if (verify_dir_item(fs_info, leaf, dir_item)) - return NULL; total_len = btrfs_item_size_nr(leaf, path->slots[0]); while (cur < total_len) { @@ -405,6 +403,8 @@ struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_fs_info *fs_info, btrfs_dir_data_len(leaf, dir_item); name_ptr = (unsigned long)(dir_item + 1); + if (verify_dir_item(fs_info, leaf, path->slots[0], dir_item)) + return NULL; if (btrfs_dir_name_len(leaf, dir_item) == name_len && memcmp_extent_buffer(leaf, name, name_ptr, name_len) == 0) return dir_item; @@ -453,9 +453,11 @@ int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, int verify_dir_item(struct btrfs_fs_info *fs_info, struct extent_buffer *leaf, + int slot, struct btrfs_dir_item *dir_item) { u16 namelen = BTRFS_NAME_LEN; + int ret; u8 type = btrfs_dir_type(leaf, dir_item); if (type >= BTRFS_FT_MAX) { @@ -472,6 +474,12 @@ int verify_dir_item(struct btrfs_fs_info *fs_info, return 1; } + namelen = btrfs_dir_name_len(leaf, dir_item); + ret = btrfs_is_name_len_valid(leaf, slot, + (unsigned long)(dir_item + 1), namelen); + if (!ret) + return 1; + /* BTRFS_MAX_XATTR_SIZE is the same for all dir items */ if ((btrfs_dir_data_len(leaf, dir_item) + btrfs_dir_name_len(leaf, dir_item)) > @@ -484,3 +492,67 @@ int verify_dir_item(struct btrfs_fs_info *fs_info, return 0; } + +bool btrfs_is_name_len_valid(struct extent_buffer *leaf, int slot, + unsigned long start, u16 name_len) +{ + struct btrfs_fs_info *fs_info = leaf->fs_info; + struct btrfs_key key; + u32 read_start; + u32 read_end; + u32 item_start; + u32 item_end; + u32 size; + bool ret = true; + + ASSERT(start > BTRFS_LEAF_DATA_OFFSET); + + read_start = start - BTRFS_LEAF_DATA_OFFSET; + read_end = read_start + name_len; + item_start = btrfs_item_offset_nr(leaf, slot); + item_end = btrfs_item_end_nr(leaf, slot); + + btrfs_item_key_to_cpu(leaf, &key, slot); + + switch (key.type) { + case BTRFS_DIR_ITEM_KEY: + case BTRFS_XATTR_ITEM_KEY: + case BTRFS_DIR_INDEX_KEY: + size = sizeof(struct btrfs_dir_item); + break; + case BTRFS_INODE_REF_KEY: + size = sizeof(struct btrfs_inode_ref); + break; + case BTRFS_INODE_EXTREF_KEY: + size = sizeof(struct btrfs_inode_extref); + break; + case BTRFS_ROOT_REF_KEY: + case BTRFS_ROOT_BACKREF_KEY: + size = sizeof(struct btrfs_root_ref); + break; + default: + ret = false; + goto out; + } + + if (read_start < item_start) { + ret = false; + goto out; + } + if (read_end > item_end) { + ret = false; + goto out; + } + + /* there shall be item(s) before name */ + if (read_start - item_start < size) { + ret = false; + goto out; + } + +out: + if (!ret) + btrfs_crit(fs_info, "invalid dir item name len: %u", + (unsigned int)name_len); + return ret; +} diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 6036d15b47b8..5abcbdc743fa 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -89,7 +89,6 @@ struct btrfs_end_io_wq { struct btrfs_fs_info *info; blk_status_t status; enum btrfs_wq_endio_type metadata; - struct list_head list; struct btrfs_work work; }; @@ -118,9 +117,9 @@ void btrfs_end_io_wq_exit(void) * just before they are sent down the IO stack. */ struct async_submit_bio { - struct inode *inode; + void *private_data; + struct btrfs_fs_info *fs_info; struct bio *bio; - struct list_head list; extent_submit_bio_hook_t *submit_bio_start; extent_submit_bio_hook_t *submit_bio_done; int mirror_num; @@ -871,7 +870,7 @@ static void run_one_async_start(struct btrfs_work *work) blk_status_t ret; async = container_of(work, struct async_submit_bio, work); - ret = async->submit_bio_start(async->inode, async->bio, + ret = async->submit_bio_start(async->private_data, async->bio, async->mirror_num, async->bio_flags, async->bio_offset); if (ret) @@ -885,7 +884,7 @@ static void run_one_async_done(struct btrfs_work *work) int limit; async = container_of(work, struct async_submit_bio, work); - fs_info = BTRFS_I(async->inode)->root->fs_info; + fs_info = async->fs_info; limit = btrfs_async_submit_limit(fs_info); limit = limit * 2 / 3; @@ -904,7 +903,7 @@ static void run_one_async_done(struct btrfs_work *work) return; } - async->submit_bio_done(async->inode, async->bio, async->mirror_num, + async->submit_bio_done(async->private_data, async->bio, async->mirror_num, async->bio_flags, async->bio_offset); } @@ -916,11 +915,11 @@ static void run_one_async_free(struct btrfs_work *work) kfree(async); } -blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, - struct inode *inode, struct bio *bio, int mirror_num, - unsigned long bio_flags, u64 bio_offset, - extent_submit_bio_hook_t *submit_bio_start, - extent_submit_bio_hook_t *submit_bio_done) +blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset, void *private_data, + extent_submit_bio_hook_t *submit_bio_start, + extent_submit_bio_hook_t *submit_bio_done) { struct async_submit_bio *async; @@ -928,7 +927,8 @@ blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, if (!async) return BLK_STS_RESOURCE; - async->inode = inode; + async->private_data = private_data; + async->fs_info = fs_info; async->bio = bio; async->mirror_num = mirror_num; async->submit_bio_start = submit_bio_start; @@ -974,9 +974,9 @@ static blk_status_t btree_csum_one_bio(struct bio *bio) return errno_to_blk_status(ret); } -static blk_status_t __btree_submit_bio_start(struct inode *inode, - struct bio *bio, int mirror_num, unsigned long bio_flags, - u64 bio_offset) +static blk_status_t __btree_submit_bio_start(void *private_data, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset) { /* * when we're called for a write, we're already in the async @@ -985,10 +985,11 @@ static blk_status_t __btree_submit_bio_start(struct inode *inode, return btree_csum_one_bio(bio); } -static blk_status_t __btree_submit_bio_done(struct inode *inode, - struct bio *bio, int mirror_num, unsigned long bio_flags, - u64 bio_offset) +static blk_status_t __btree_submit_bio_done(void *private_data, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset) { + struct inode *inode = private_data; blk_status_t ret; /* @@ -1014,10 +1015,11 @@ static int check_async_write(unsigned long bio_flags) return 1; } -static blk_status_t btree_submit_bio_hook(struct inode *inode, struct bio *bio, - int mirror_num, unsigned long bio_flags, - u64 bio_offset) +static blk_status_t btree_submit_bio_hook(void *private_data, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset) { + struct inode *inode = private_data; struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); int async = check_async_write(bio_flags); blk_status_t ret; @@ -1042,8 +1044,8 @@ static blk_status_t btree_submit_bio_hook(struct inode *inode, struct bio *bio, * kthread helpers are used to submit writes so that * checksumming can happen in parallel across all CPUs */ - ret = btrfs_wq_submit_bio(fs_info, inode, bio, mirror_num, 0, - bio_offset, + ret = btrfs_wq_submit_bio(fs_info, bio, mirror_num, 0, + bio_offset, private_data, __btree_submit_bio_start, __btree_submit_bio_done); } @@ -1221,10 +1223,10 @@ int btrfs_write_tree_block(struct extent_buffer *buf) buf->start + buf->len - 1); } -int btrfs_wait_tree_block_writeback(struct extent_buffer *buf) +void btrfs_wait_tree_block_writeback(struct extent_buffer *buf) { - return filemap_fdatawait_range(buf->pages[0]->mapping, - buf->start, buf->start + buf->len - 1); + filemap_fdatawait_range(buf->pages[0]->mapping, + buf->start, buf->start + buf->len - 1); } struct extent_buffer *read_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr, @@ -1346,8 +1348,7 @@ static void __setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info, root->log_transid_committed = -1; root->last_log_commit = 0; if (!dummy) - extent_io_tree_init(&root->dirty_log_pages, - fs_info->btree_inode->i_mapping); + extent_io_tree_init(&root->dirty_log_pages, NULL); memset(&root->root_key, 0, sizeof(root->root_key)); memset(&root->root_item, 0, sizeof(root->root_item)); @@ -2308,7 +2309,7 @@ static void btrfs_init_btree_inode(struct btrfs_fs_info *fs_info) inode->i_mapping->a_ops = &btree_aops; RB_CLEAR_NODE(&BTRFS_I(inode)->rb_node); - extent_io_tree_init(&BTRFS_I(inode)->io_tree, inode->i_mapping); + extent_io_tree_init(&BTRFS_I(inode)->io_tree, inode); BTRFS_I(inode)->io_tree.track_uptodate = 0; extent_map_tree_init(&BTRFS_I(inode)->extent_tree); @@ -2625,7 +2626,6 @@ int open_ctree(struct super_block *sb, spin_lock_init(&fs_info->fs_roots_radix_lock); spin_lock_init(&fs_info->delayed_iput_lock); spin_lock_init(&fs_info->defrag_inodes_lock); - spin_lock_init(&fs_info->free_chunk_lock); spin_lock_init(&fs_info->tree_mod_seq_lock); spin_lock_init(&fs_info->super_lock); spin_lock_init(&fs_info->qgroup_op_lock); @@ -2661,12 +2661,11 @@ int open_ctree(struct super_block *sb, atomic_set(&fs_info->qgroup_op_seq, 0); atomic_set(&fs_info->reada_works_cnt, 0); atomic64_set(&fs_info->tree_mod_seq, 0); - fs_info->fs_frozen = 0; fs_info->sb = sb; fs_info->max_inline = BTRFS_DEFAULT_MAX_INLINE; fs_info->metadata_ratio = 0; fs_info->defrag_inodes = RB_ROOT; - fs_info->free_chunk_space = 0; + atomic64_set(&fs_info->free_chunk_space, 0); fs_info->tree_mod_log = RB_ROOT; fs_info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL; fs_info->avg_delayed_ref_runtime = NSEC_PER_SEC >> 6; /* div by 64 */ @@ -2703,10 +2702,8 @@ int open_ctree(struct super_block *sb, fs_info->block_group_cache_tree = RB_ROOT; fs_info->first_logical_byte = (u64)-1; - extent_io_tree_init(&fs_info->freed_extents[0], - fs_info->btree_inode->i_mapping); - extent_io_tree_init(&fs_info->freed_extents[1], - fs_info->btree_inode->i_mapping); + extent_io_tree_init(&fs_info->freed_extents[0], NULL); + extent_io_tree_init(&fs_info->freed_extents[1], NULL); fs_info->pinned_extents = &fs_info->freed_extents[0]; set_bit(BTRFS_FS_BARRIER, &fs_info->flags); @@ -3484,65 +3481,61 @@ static int write_dev_supers(struct btrfs_device *device, */ static void btrfs_end_empty_barrier(struct bio *bio) { - if (bio->bi_private) - complete(bio->bi_private); - bio_put(bio); + complete(bio->bi_private); } /* - * trigger flushes for one the devices. If you pass wait == 0, the flushes are - * sent down. With wait == 1, it waits for the previous flush. - * - * any device where the flush fails with eopnotsupp are flagged as not-barrier - * capable + * Submit a flush request to the device if it supports it. Error handling is + * done in the waiting counterpart. */ -static blk_status_t write_dev_flush(struct btrfs_device *device, int wait) +static void write_dev_flush(struct btrfs_device *device) { struct request_queue *q = bdev_get_queue(device->bdev); - struct bio *bio; - blk_status_t ret = 0; + struct bio *bio = device->flush_bio; if (!test_bit(QUEUE_FLAG_WC, &q->queue_flags)) - return 0; + return; - if (wait) { - bio = device->flush_bio; - if (!bio) - return 0; + bio_reset(bio); + bio->bi_end_io = btrfs_end_empty_barrier; + bio->bi_bdev = device->bdev; + bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; + init_completion(&device->flush_wait); + bio->bi_private = &device->flush_wait; - wait_for_completion(&device->flush_wait); + submit_bio(bio); + device->flush_bio_sent = 1; +} - if (bio->bi_status) { - ret = bio->bi_status; - btrfs_dev_stat_inc_and_print(device, - BTRFS_DEV_STAT_FLUSH_ERRS); - } +/* + * If the flush bio has been submitted by write_dev_flush, wait for it. + */ +static blk_status_t wait_dev_flush(struct btrfs_device *device) +{ + struct bio *bio = device->flush_bio; - /* drop the reference from the wait == 0 run */ - bio_put(bio); - device->flush_bio = NULL; + if (!device->flush_bio_sent) + return 0; - return ret; - } + device->flush_bio_sent = 0; + wait_for_completion_io(&device->flush_wait); - /* - * one reference for us, and we leave it for the - * caller - */ - device->flush_bio = NULL; - bio = btrfs_io_bio_alloc(GFP_NOFS, 0); - if (!bio) - return BLK_STS_RESOURCE; + return bio->bi_status; +} - bio->bi_end_io = btrfs_end_empty_barrier; - bio->bi_bdev = device->bdev; - bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; - init_completion(&device->flush_wait); - bio->bi_private = &device->flush_wait; - device->flush_bio = bio; +static int check_barrier_error(struct btrfs_fs_devices *fsdevs) +{ + int dev_flush_error = 0; + struct btrfs_device *dev; - bio_get(bio); - btrfsic_submit_bio(bio); + list_for_each_entry_rcu(dev, &fsdevs->devices, dev_list) { + if (!dev->bdev || dev->last_flush_error) + dev_flush_error++; + } + + if (dev_flush_error > + fsdevs->fs_info->num_tolerated_disk_barrier_failures) + return -EIO; return 0; } @@ -3555,7 +3548,6 @@ static int barrier_all_devices(struct btrfs_fs_info *info) { struct list_head *head; struct btrfs_device *dev; - int errors_send = 0; int errors_wait = 0; blk_status_t ret; @@ -3564,16 +3556,13 @@ static int barrier_all_devices(struct btrfs_fs_info *info) list_for_each_entry_rcu(dev, head, dev_list) { if (dev->missing) continue; - if (!dev->bdev) { - errors_send++; + if (!dev->bdev) continue; - } if (!dev->in_fs_metadata || !dev->writeable) continue; - ret = write_dev_flush(dev, 0); - if (ret) - errors_send++; + write_dev_flush(dev); + dev->last_flush_error = 0; } /* wait for all the barriers */ @@ -3587,13 +3576,23 @@ static int barrier_all_devices(struct btrfs_fs_info *info) if (!dev->in_fs_metadata || !dev->writeable) continue; - ret = write_dev_flush(dev, 1); - if (ret) + ret = wait_dev_flush(dev); + if (ret) { + dev->last_flush_error = ret; + btrfs_dev_stat_inc_and_print(dev, + BTRFS_DEV_STAT_FLUSH_ERRS); errors_wait++; + } + } + + if (errors_wait) { + /* + * At some point we need the status of all disks + * to arrive at the volume status. So error checking + * is being pushed to a separate loop. + */ + return check_barrier_error(info->fs_devices); } - if (errors_send > info->num_tolerated_disk_barrier_failures || - errors_wait > info->num_tolerated_disk_barrier_failures) - return -EIO; return 0; } @@ -4577,11 +4576,6 @@ void btrfs_cleanup_one_transaction(struct btrfs_transaction *cur_trans, cur_trans->state =TRANS_STATE_COMPLETED; wake_up(&cur_trans->commit_wait); - - /* - memset(cur_trans, 0, sizeof(*cur_trans)); - kmem_cache_free(btrfs_transaction_cachep, cur_trans); - */ } static int btrfs_cleanup_transaction(struct btrfs_fs_info *fs_info) @@ -4637,6 +4631,12 @@ static int btrfs_cleanup_transaction(struct btrfs_fs_info *fs_info) return 0; } +static struct btrfs_fs_info *btree_fs_info(void *private_data) +{ + struct inode *inode = private_data; + return btrfs_sb(inode->i_sb); +} + static const struct extent_io_ops btree_extent_io_ops = { /* mandatory callbacks */ .submit_bio_hook = btree_submit_bio_hook, @@ -4644,6 +4644,8 @@ static const struct extent_io_ops btree_extent_io_ops = { /* note we're sharing with inode.c for the merge bio hook */ .merge_bio_hook = btrfs_merge_bio_hook, .readpage_io_failed_hook = btree_io_failed_hook, + .set_range_writeback = btrfs_set_range_writeback, + .tree_fs_info = btree_fs_info, /* optional callbacks */ }; diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index c581927555f3..0a634d3ffc16 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -120,14 +120,14 @@ u32 btrfs_csum_data(const char *data, u32 seed, size_t len); void btrfs_csum_final(u32 crc, u8 *result); blk_status_t btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio, enum btrfs_wq_endio_type metadata); -blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, - struct inode *inode, struct bio *bio, int mirror_num, - unsigned long bio_flags, u64 bio_offset, - extent_submit_bio_hook_t *submit_bio_start, - extent_submit_bio_hook_t *submit_bio_done); +blk_status_t btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset, void *private_data, + extent_submit_bio_hook_t *submit_bio_start, + extent_submit_bio_hook_t *submit_bio_done); unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info); int btrfs_write_tree_block(struct extent_buffer *buf); -int btrfs_wait_tree_block_writeback(struct extent_buffer *buf); +void btrfs_wait_tree_block_writeback(struct extent_buffer *buf); int btrfs_init_log_root_tree(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info); int btrfs_add_log_tree(struct btrfs_trans_handle *trans, diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c index 87144c9f9593..fa66980726c9 100644 --- a/fs/btrfs/export.c +++ b/fs/btrfs/export.c @@ -282,6 +282,11 @@ static int btrfs_get_name(struct dentry *parent, char *name, name_len = btrfs_inode_ref_name_len(leaf, iref); } + ret = btrfs_is_name_len_valid(leaf, path->slots[0], name_ptr, name_len); + if (!ret) { + btrfs_free_path(path); + return -EIO; + } read_extent_buffer(leaf, name, name_ptr, name_len); btrfs_free_path(path); diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 33d979e9ea2a..375f8c728d91 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -97,10 +97,11 @@ static int btrfs_free_reserved_bytes(struct btrfs_block_group_cache *cache, u64 num_bytes, int delalloc); static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes); -static int __reserve_metadata_bytes(struct btrfs_root *root, +static int __reserve_metadata_bytes(struct btrfs_fs_info *fs_info, struct btrfs_space_info *space_info, u64 orig_bytes, - enum btrfs_reserve_flush_enum flush); + enum btrfs_reserve_flush_enum flush, + bool system_chunk); static void space_info_add_new_bytes(struct btrfs_fs_info *fs_info, struct btrfs_space_info *space_info, u64 num_bytes); @@ -766,6 +767,26 @@ static struct btrfs_space_info *__find_space_info(struct btrfs_fs_info *info, return NULL; } +static void add_pinned_bytes(struct btrfs_fs_info *fs_info, s64 num_bytes, + u64 owner, u64 root_objectid) +{ + struct btrfs_space_info *space_info; + u64 flags; + + if (owner < BTRFS_FIRST_FREE_OBJECTID) { + if (root_objectid == BTRFS_CHUNK_TREE_OBJECTID) + flags = BTRFS_BLOCK_GROUP_SYSTEM; + else + flags = BTRFS_BLOCK_GROUP_METADATA; + } else { + flags = BTRFS_BLOCK_GROUP_DATA; + } + + space_info = __find_space_info(fs_info, flags); + ASSERT(space_info); + percpu_counter_add(&space_info->total_bytes_pinned, num_bytes); +} + /* * after adding space to the filesystem, we need to clear the full flags * on all the space infos. @@ -2092,6 +2113,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, u64 owner, u64 offset) { + int old_ref_mod, new_ref_mod; int ret; BUG_ON(owner < BTRFS_FIRST_FREE_OBJECTID && @@ -2099,15 +2121,21 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, if (owner < BTRFS_FIRST_FREE_OBJECTID) { ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr, - num_bytes, - parent, root_objectid, (int)owner, - BTRFS_ADD_DELAYED_REF, NULL); + num_bytes, parent, + root_objectid, (int)owner, + BTRFS_ADD_DELAYED_REF, NULL, + &old_ref_mod, &new_ref_mod); } else { ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr, - num_bytes, parent, root_objectid, - owner, offset, 0, - BTRFS_ADD_DELAYED_REF); + num_bytes, parent, + root_objectid, owner, offset, + 0, BTRFS_ADD_DELAYED_REF, + &old_ref_mod, &new_ref_mod); } + + if (ret == 0 && old_ref_mod < 0 && new_ref_mod >= 0) + add_pinned_bytes(fs_info, -num_bytes, owner, root_objectid); + return ret; } @@ -2411,6 +2439,16 @@ static int run_one_delayed_ref(struct btrfs_trans_handle *trans, head = btrfs_delayed_node_to_head(node); trace_run_delayed_ref_head(fs_info, node, head, node->action); + if (head->total_ref_mod < 0) { + struct btrfs_block_group_cache *cache; + + cache = btrfs_lookup_block_group(fs_info, node->bytenr); + ASSERT(cache); + percpu_counter_add(&cache->space_info->total_bytes_pinned, + -node->num_bytes); + btrfs_put_block_group(cache); + } + if (insert_reserved) { btrfs_pin_extent(fs_info, node->bytenr, node->num_bytes, 1); @@ -3364,6 +3402,7 @@ static int cache_save_setup(struct btrfs_block_group_cache *block_group, struct btrfs_fs_info *fs_info = block_group->fs_info; struct btrfs_root *root = fs_info->tree_root; struct inode *inode = NULL; + struct extent_changeset *data_reserved = NULL; u64 alloc_hint = 0; int dcs = BTRFS_DC_ERROR; u64 num_pages = 0; @@ -3483,7 +3522,7 @@ again: num_pages *= 16; num_pages *= PAGE_SIZE; - ret = btrfs_check_data_free_space(inode, 0, num_pages); + ret = btrfs_check_data_free_space(inode, &data_reserved, 0, num_pages); if (ret) goto out_put; @@ -3514,6 +3553,7 @@ out: block_group->disk_cache_state = dcs; spin_unlock(&block_group->lock); + extent_changeset_free(data_reserved); return ret; } @@ -3924,88 +3964,83 @@ static const char *alloc_name(u64 flags) }; } -static int update_space_info(struct btrfs_fs_info *info, u64 flags, - u64 total_bytes, u64 bytes_used, - u64 bytes_readonly, - struct btrfs_space_info **space_info) +static int create_space_info(struct btrfs_fs_info *info, u64 flags, + struct btrfs_space_info **new) { - struct btrfs_space_info *found; + + struct btrfs_space_info *space_info; int i; - int factor; int ret; - if (flags & (BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1 | - BTRFS_BLOCK_GROUP_RAID10)) - factor = 2; - else - factor = 1; - - found = __find_space_info(info, flags); - if (found) { - spin_lock(&found->lock); - found->total_bytes += total_bytes; - found->disk_total += total_bytes * factor; - found->bytes_used += bytes_used; - found->disk_used += bytes_used * factor; - found->bytes_readonly += bytes_readonly; - if (total_bytes > 0) - found->full = 0; - space_info_add_new_bytes(info, found, total_bytes - - bytes_used - bytes_readonly); - spin_unlock(&found->lock); - *space_info = found; - return 0; - } - found = kzalloc(sizeof(*found), GFP_NOFS); - if (!found) + space_info = kzalloc(sizeof(*space_info), GFP_NOFS); + if (!space_info) return -ENOMEM; - ret = percpu_counter_init(&found->total_bytes_pinned, 0, GFP_KERNEL); + ret = percpu_counter_init(&space_info->total_bytes_pinned, 0, + GFP_KERNEL); if (ret) { - kfree(found); + kfree(space_info); return ret; } for (i = 0; i < BTRFS_NR_RAID_TYPES; i++) - INIT_LIST_HEAD(&found->block_groups[i]); - init_rwsem(&found->groups_sem); - spin_lock_init(&found->lock); - found->flags = flags & BTRFS_BLOCK_GROUP_TYPE_MASK; - found->total_bytes = total_bytes; - found->disk_total = total_bytes * factor; - found->bytes_used = bytes_used; - found->disk_used = bytes_used * factor; - found->bytes_pinned = 0; - found->bytes_reserved = 0; - found->bytes_readonly = bytes_readonly; - found->bytes_may_use = 0; - found->full = 0; - found->max_extent_size = 0; - found->force_alloc = CHUNK_ALLOC_NO_FORCE; - found->chunk_alloc = 0; - found->flush = 0; - init_waitqueue_head(&found->wait); - INIT_LIST_HEAD(&found->ro_bgs); - INIT_LIST_HEAD(&found->tickets); - INIT_LIST_HEAD(&found->priority_tickets); - - ret = kobject_init_and_add(&found->kobj, &space_info_ktype, + INIT_LIST_HEAD(&space_info->block_groups[i]); + init_rwsem(&space_info->groups_sem); + spin_lock_init(&space_info->lock); + space_info->flags = flags & BTRFS_BLOCK_GROUP_TYPE_MASK; + space_info->force_alloc = CHUNK_ALLOC_NO_FORCE; + init_waitqueue_head(&space_info->wait); + INIT_LIST_HEAD(&space_info->ro_bgs); + INIT_LIST_HEAD(&space_info->tickets); + INIT_LIST_HEAD(&space_info->priority_tickets); + + ret = kobject_init_and_add(&space_info->kobj, &space_info_ktype, info->space_info_kobj, "%s", - alloc_name(found->flags)); + alloc_name(space_info->flags)); if (ret) { - percpu_counter_destroy(&found->total_bytes_pinned); - kfree(found); + percpu_counter_destroy(&space_info->total_bytes_pinned); + kfree(space_info); return ret; } - *space_info = found; - list_add_rcu(&found->list, &info->space_info); + *new = space_info; + list_add_rcu(&space_info->list, &info->space_info); if (flags & BTRFS_BLOCK_GROUP_DATA) - info->data_sinfo = found; + info->data_sinfo = space_info; return ret; } +static void update_space_info(struct btrfs_fs_info *info, u64 flags, + u64 total_bytes, u64 bytes_used, + u64 bytes_readonly, + struct btrfs_space_info **space_info) +{ + struct btrfs_space_info *found; + int factor; + + if (flags & (BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1 | + BTRFS_BLOCK_GROUP_RAID10)) + factor = 2; + else + factor = 1; + + found = __find_space_info(info, flags); + ASSERT(found); + spin_lock(&found->lock); + found->total_bytes += total_bytes; + found->disk_total += total_bytes * factor; + found->bytes_used += bytes_used; + found->disk_used += bytes_used * factor; + found->bytes_readonly += bytes_readonly; + if (total_bytes > 0) + found->full = 0; + space_info_add_new_bytes(info, found, total_bytes - + bytes_used - bytes_readonly); + spin_unlock(&found->lock); + *space_info = found; +} + static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags) { u64 extra_flags = chunk_to_extended(flags) & @@ -4121,7 +4156,7 @@ static u64 get_alloc_profile(struct btrfs_fs_info *fs_info, u64 orig_flags) return btrfs_reduce_alloc_profile(fs_info, flags); } -u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data) +static u64 get_alloc_profile_by_root(struct btrfs_root *root, int data) { struct btrfs_fs_info *fs_info = root->fs_info; u64 flags; @@ -4138,6 +4173,21 @@ u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data) return ret; } +u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info) +{ + return get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_DATA); +} + +u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info) +{ + return get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_METADATA); +} + +u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info) +{ + return get_alloc_profile(fs_info, BTRFS_BLOCK_GROUP_SYSTEM); +} + static u64 btrfs_space_info_used(struct btrfs_space_info *s_info, bool may_use_included) { @@ -4187,7 +4237,7 @@ again: data_sinfo->force_alloc = CHUNK_ALLOC_FORCE; spin_unlock(&data_sinfo->lock); alloc: - alloc_target = btrfs_get_alloc_profile(root, 1); + alloc_target = btrfs_data_alloc_profile(fs_info); /* * It is ugly that we don't call nolock join * transaction for the free space inode case here. @@ -4238,7 +4288,7 @@ commit_trans: if (need_commit > 0) { btrfs_start_delalloc_roots(fs_info, 0, -1); - btrfs_wait_ordered_roots(fs_info, -1, 0, + btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1); } @@ -4278,12 +4328,8 @@ commit_trans: return ret; } -/* - * New check_data_free_space() with ability for precious data reservation - * Will replace old btrfs_check_data_free_space(), but for patch split, - * add a new function first and then replace it. - */ -int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len) +int btrfs_check_data_free_space(struct inode *inode, + struct extent_changeset **reserved, u64 start, u64 len) { struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); int ret; @@ -4298,9 +4344,11 @@ int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len) return ret; /* Use new btrfs_qgroup_reserve_data to reserve precious data space. */ - ret = btrfs_qgroup_reserve_data(inode, start, len); - if (ret) + ret = btrfs_qgroup_reserve_data(inode, reserved, start, len); + if (ret < 0) btrfs_free_reserved_data_space_noquota(inode, start, len); + else + ret = 0; return ret; } @@ -4341,7 +4389,8 @@ void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start, * This one will handle the per-inode data rsv map for accurate reserved * space framework. */ -void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len) +void btrfs_free_reserved_data_space(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len) { struct btrfs_root *root = BTRFS_I(inode)->root; @@ -4351,7 +4400,7 @@ void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len) start = round_down(start, root->fs_info->sectorsize); btrfs_free_reserved_data_space_noquota(inode, start, len); - btrfs_qgroup_free_data(inode, start, len); + btrfs_qgroup_free_data(inode, reserved, start, len); } static void force_metadata_allocation(struct btrfs_fs_info *info) @@ -4463,9 +4512,8 @@ void check_system_chunk(struct btrfs_trans_handle *trans, } if (left < thresh) { - u64 flags; + u64 flags = btrfs_system_alloc_profile(fs_info); - flags = btrfs_get_alloc_profile(fs_info->chunk_root, 0); /* * Ignore failure to create system chunk. We might end up not * needing it, as we might not need to COW all nodes/leafs from @@ -4506,10 +4554,10 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans, space_info = __find_space_info(fs_info, flags); if (!space_info) { - ret = update_space_info(fs_info, flags, 0, 0, 0, &space_info); - BUG_ON(ret); /* -ENOMEM */ + ret = create_space_info(fs_info, flags, &space_info); + if (ret) + return ret; } - BUG_ON(!space_info); /* Logic error */ again: spin_lock(&space_info->lock); @@ -4614,11 +4662,11 @@ out: return ret; } -static int can_overcommit(struct btrfs_root *root, +static int can_overcommit(struct btrfs_fs_info *fs_info, struct btrfs_space_info *space_info, u64 bytes, - enum btrfs_reserve_flush_enum flush) + enum btrfs_reserve_flush_enum flush, + bool system_chunk) { - struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv; u64 profile; u64 space_size; @@ -4629,7 +4677,11 @@ static int can_overcommit(struct btrfs_root *root, if (space_info->flags & BTRFS_BLOCK_GROUP_DATA) return 0; - profile = btrfs_get_alloc_profile(root, 0); + if (system_chunk) + profile = btrfs_system_alloc_profile(fs_info); + else + profile = btrfs_metadata_alloc_profile(fs_info); + used = btrfs_space_info_used(space_info, false); /* @@ -4646,9 +4698,7 @@ static int can_overcommit(struct btrfs_root *root, used += space_info->bytes_may_use; - spin_lock(&fs_info->free_chunk_lock); - avail = fs_info->free_chunk_space; - spin_unlock(&fs_info->free_chunk_lock); + avail = atomic64_read(&fs_info->free_chunk_space); /* * If we have dup, raid1 or raid10 then only half of the free @@ -4698,14 +4748,14 @@ static void btrfs_writeback_inodes_sb_nr(struct btrfs_fs_info *fs_info, } } -static inline int calc_reclaim_items_nr(struct btrfs_fs_info *fs_info, +static inline u64 calc_reclaim_items_nr(struct btrfs_fs_info *fs_info, u64 to_reclaim) { u64 bytes; - int nr; + u64 nr; bytes = btrfs_calc_trans_metadata_size(fs_info, 1); - nr = (int)div64_u64(to_reclaim, bytes); + nr = div64_u64(to_reclaim, bytes); if (!nr) nr = 1; return nr; @@ -4716,24 +4766,23 @@ static inline int calc_reclaim_items_nr(struct btrfs_fs_info *fs_info, /* * shrink metadata reservation for delalloc */ -static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig, - bool wait_ordered) +static void shrink_delalloc(struct btrfs_fs_info *fs_info, u64 to_reclaim, + u64 orig, bool wait_ordered) { - struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_block_rsv *block_rsv; struct btrfs_space_info *space_info; struct btrfs_trans_handle *trans; u64 delalloc_bytes; u64 max_reclaim; + u64 items; long time_left; unsigned long nr_pages; int loops; - int items; enum btrfs_reserve_flush_enum flush; /* Calc the number of the pages we need flush for space reservation */ items = calc_reclaim_items_nr(fs_info, to_reclaim); - to_reclaim = (u64)items * EXTENT_SIZE_PER_ITEM; + to_reclaim = items * EXTENT_SIZE_PER_ITEM; trans = (struct btrfs_trans_handle *)current->journal_info; block_rsv = &fs_info->delalloc_block_rsv; @@ -4776,7 +4825,7 @@ skip_async: else flush = BTRFS_RESERVE_NO_FLUSH; spin_lock(&space_info->lock); - if (can_overcommit(root, space_info, orig, flush)) { + if (can_overcommit(fs_info, space_info, orig, flush, false)) { spin_unlock(&space_info->lock); break; } @@ -4838,7 +4887,7 @@ static int may_commit_transaction(struct btrfs_fs_info *fs_info, spin_lock(&delayed_rsv->lock); if (percpu_counter_compare(&space_info->total_bytes_pinned, - bytes - delayed_rsv->size) >= 0) { + bytes - delayed_rsv->size) < 0) { spin_unlock(&delayed_rsv->lock); return -ENOSPC; } @@ -4886,7 +4935,7 @@ static int flush_space(struct btrfs_fs_info *fs_info, break; case FLUSH_DELALLOC: case FLUSH_DELALLOC_WAIT: - shrink_delalloc(root, num_bytes * 2, orig_bytes, + shrink_delalloc(fs_info, num_bytes * 2, orig_bytes, state == FLUSH_DELALLOC_WAIT); break; case ALLOC_CHUNK: @@ -4896,7 +4945,7 @@ static int flush_space(struct btrfs_fs_info *fs_info, break; } ret = do_chunk_alloc(trans, fs_info, - btrfs_get_alloc_profile(root, 0), + btrfs_metadata_alloc_profile(fs_info), CHUNK_ALLOC_NO_FORCE); btrfs_end_transaction(trans); if (ret > 0 || ret == -ENOSPC) @@ -4917,8 +4966,9 @@ static int flush_space(struct btrfs_fs_info *fs_info, } static inline u64 -btrfs_calc_reclaim_metadata_size(struct btrfs_root *root, - struct btrfs_space_info *space_info) +btrfs_calc_reclaim_metadata_size(struct btrfs_fs_info *fs_info, + struct btrfs_space_info *space_info, + bool system_chunk) { struct reserve_ticket *ticket; u64 used; @@ -4933,14 +4983,14 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root, return to_reclaim; to_reclaim = min_t(u64, num_online_cpus() * SZ_1M, SZ_16M); - if (can_overcommit(root, space_info, to_reclaim, - BTRFS_RESERVE_FLUSH_ALL)) + if (can_overcommit(fs_info, space_info, to_reclaim, + BTRFS_RESERVE_FLUSH_ALL, system_chunk)) return 0; - used = space_info->bytes_used + space_info->bytes_reserved + - space_info->bytes_pinned + space_info->bytes_readonly + - space_info->bytes_may_use; - if (can_overcommit(root, space_info, SZ_1M, BTRFS_RESERVE_FLUSH_ALL)) + used = btrfs_space_info_used(space_info, true); + + if (can_overcommit(fs_info, space_info, SZ_1M, + BTRFS_RESERVE_FLUSH_ALL, system_chunk)) expected = div_factor_fine(space_info->total_bytes, 95); else expected = div_factor_fine(space_info->total_bytes, 90); @@ -4954,17 +5004,18 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root, return to_reclaim; } -static inline int need_do_async_reclaim(struct btrfs_space_info *space_info, - struct btrfs_root *root, u64 used) +static inline int need_do_async_reclaim(struct btrfs_fs_info *fs_info, + struct btrfs_space_info *space_info, + u64 used, bool system_chunk) { - struct btrfs_fs_info *fs_info = root->fs_info; u64 thresh = div_factor_fine(space_info->total_bytes, 98); /* If we're just plain full then async reclaim just slows us down. */ if ((space_info->bytes_used + space_info->bytes_reserved) >= thresh) return 0; - if (!btrfs_calc_reclaim_metadata_size(root, space_info)) + if (!btrfs_calc_reclaim_metadata_size(fs_info, space_info, + system_chunk)) return 0; return (used >= thresh && !btrfs_fs_closing(fs_info) && @@ -5001,8 +5052,8 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work) space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA); spin_lock(&space_info->lock); - to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info->fs_root, - space_info); + to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info, space_info, + false); if (!to_reclaim) { space_info->flush = 0; spin_unlock(&space_info->lock); @@ -5024,8 +5075,9 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work) spin_unlock(&space_info->lock); return; } - to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info->fs_root, - space_info); + to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info, + space_info, + false); ticket = list_first_entry(&space_info->tickets, struct reserve_ticket, list); if (last_tickets_id == space_info->tickets_id) { @@ -5063,8 +5115,8 @@ static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info, int flush_state = FLUSH_DELAYED_ITEMS_NR; spin_lock(&space_info->lock); - to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info->extent_root, - space_info); + to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info, space_info, + false); if (!to_reclaim) { spin_unlock(&space_info->lock); return; @@ -5143,12 +5195,12 @@ static int wait_reserve_ticket(struct btrfs_fs_info *fs_info, * regain reservations will be made and this will fail if there is not enough * space already. */ -static int __reserve_metadata_bytes(struct btrfs_root *root, +static int __reserve_metadata_bytes(struct btrfs_fs_info *fs_info, struct btrfs_space_info *space_info, u64 orig_bytes, - enum btrfs_reserve_flush_enum flush) + enum btrfs_reserve_flush_enum flush, + bool system_chunk) { - struct btrfs_fs_info *fs_info = root->fs_info; struct reserve_ticket ticket; u64 used; int ret = 0; @@ -5170,7 +5222,8 @@ static int __reserve_metadata_bytes(struct btrfs_root *root, trace_btrfs_space_reservation(fs_info, "space_info", space_info->flags, orig_bytes, 1); ret = 0; - } else if (can_overcommit(root, space_info, orig_bytes, flush)) { + } else if (can_overcommit(fs_info, space_info, orig_bytes, flush, + system_chunk)) { space_info->bytes_may_use += orig_bytes; trace_btrfs_space_reservation(fs_info, "space_info", space_info->flags, orig_bytes, 1); @@ -5197,7 +5250,7 @@ static int __reserve_metadata_bytes(struct btrfs_root *root, orig_bytes, flush, "enospc"); queue_work(system_unbound_wq, - &root->fs_info->async_reclaim_work); + &fs_info->async_reclaim_work); } } else { list_add_tail(&ticket.list, @@ -5211,7 +5264,8 @@ static int __reserve_metadata_bytes(struct btrfs_root *root, * the async reclaim as we will panic. */ if (!test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags) && - need_do_async_reclaim(space_info, root, used) && + need_do_async_reclaim(fs_info, space_info, + used, system_chunk) && !work_busy(&fs_info->async_reclaim_work)) { trace_btrfs_trigger_flush(fs_info, space_info->flags, orig_bytes, flush, "preempt"); @@ -5269,9 +5323,10 @@ static int reserve_metadata_bytes(struct btrfs_root *root, struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv; int ret; + bool system_chunk = (root == fs_info->chunk_root); - ret = __reserve_metadata_bytes(root, block_rsv->space_info, orig_bytes, - flush); + ret = __reserve_metadata_bytes(fs_info, block_rsv->space_info, + orig_bytes, flush, system_chunk); if (ret == -ENOSPC && unlikely(root->orphan_cleanup_state == ORPHAN_CLEANUP_STARTED)) { if (block_rsv != global_rsv && @@ -5380,9 +5435,7 @@ static void space_info_add_old_bytes(struct btrfs_fs_info *fs_info, * overcommit, and if we can't then we just need to free up our space * and not satisfy any requests. */ - used = space_info->bytes_used + space_info->bytes_reserved + - space_info->bytes_pinned + space_info->bytes_readonly + - space_info->bytes_may_use; + used = btrfs_space_info_used(space_info, true); if (used - num_bytes >= space_info->total_bytes) check_overcommit = true; again: @@ -5394,8 +5447,7 @@ again: * adding the ticket space would be a double count. */ if (check_overcommit && - !can_overcommit(fs_info->extent_root, space_info, 0, - flush)) + !can_overcommit(fs_info, space_info, 0, flush, false)) break; if (num_bytes >= ticket->bytes) { list_del_init(&ticket->list); @@ -6124,6 +6176,8 @@ void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes) * @inode: inode we're writing to * @start: start range we are writing to * @len: how long the range we are writing to + * @reserved: mandatory parameter, record actually reserved qgroup ranges of + * current reservation. * * This will do the following things * @@ -6141,16 +6195,17 @@ void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes) * Return 0 for success * Return <0 for error(-ENOSPC or -EQUOT) */ -int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len) +int btrfs_delalloc_reserve_space(struct inode *inode, + struct extent_changeset **reserved, u64 start, u64 len) { int ret; - ret = btrfs_check_data_free_space(inode, start, len); + ret = btrfs_check_data_free_space(inode, reserved, start, len); if (ret < 0) return ret; ret = btrfs_delalloc_reserve_metadata(BTRFS_I(inode), len); if (ret < 0) - btrfs_free_reserved_data_space(inode, start, len); + btrfs_free_reserved_data_space(inode, *reserved, start, len); return ret; } @@ -6169,10 +6224,11 @@ int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len) * list if there are no delalloc bytes left. * Also it will handle the qgroup reserved space. */ -void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len) +void btrfs_delalloc_release_space(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len) { btrfs_delalloc_release_metadata(BTRFS_I(inode), len); - btrfs_free_reserved_data_space(inode, start, len); + btrfs_free_reserved_data_space(inode, reserved, start, len); } static int update_block_group(struct btrfs_trans_handle *trans, @@ -6248,6 +6304,8 @@ static int update_block_group(struct btrfs_trans_handle *trans, trace_btrfs_space_reservation(info, "pinned", cache->space_info->flags, num_bytes, 1); + percpu_counter_add(&cache->space_info->total_bytes_pinned, + num_bytes); set_extent_dirty(info->pinned_extents, bytenr, bytenr + num_bytes - 1, GFP_NOFS | __GFP_NOFAIL); @@ -6324,6 +6382,7 @@ static int pin_down_extent(struct btrfs_fs_info *fs_info, trace_btrfs_space_reservation(fs_info, "pinned", cache->space_info->flags, num_bytes, 1); + percpu_counter_add(&cache->space_info->total_bytes_pinned, num_bytes); set_extent_dirty(fs_info->pinned_extents, bytenr, bytenr + num_bytes - 1, GFP_NOFS | __GFP_NOFAIL); return 0; @@ -6794,27 +6853,6 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, return 0; } -static void add_pinned_bytes(struct btrfs_fs_info *fs_info, u64 num_bytes, - u64 owner, u64 root_objectid) -{ - struct btrfs_space_info *space_info; - u64 flags; - - if (owner < BTRFS_FIRST_FREE_OBJECTID) { - if (root_objectid == BTRFS_CHUNK_TREE_OBJECTID) - flags = BTRFS_BLOCK_GROUP_SYSTEM; - else - flags = BTRFS_BLOCK_GROUP_METADATA; - } else { - flags = BTRFS_BLOCK_GROUP_DATA; - } - - space_info = __find_space_info(fs_info, flags); - BUG_ON(!space_info); /* Logic bug */ - percpu_counter_add(&space_info->total_bytes_pinned, num_bytes); -} - - static int __btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_fs_info *info, struct btrfs_delayed_ref_node *node, u64 parent, @@ -7037,8 +7075,6 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, goto out; } } - add_pinned_bytes(info, -num_bytes, owner_objectid, - root_objectid); } else { if (found_extent) { BUG_ON(is_data && refs_to_drop != @@ -7170,19 +7206,19 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans, int ret; if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) { - ret = btrfs_add_delayed_tree_ref(fs_info, trans, - buf->start, buf->len, - parent, + int old_ref_mod, new_ref_mod; + + ret = btrfs_add_delayed_tree_ref(fs_info, trans, buf->start, + buf->len, parent, root->root_key.objectid, btrfs_header_level(buf), - BTRFS_DROP_DELAYED_REF, NULL); + BTRFS_DROP_DELAYED_REF, NULL, + &old_ref_mod, &new_ref_mod); BUG_ON(ret); /* -ENOMEM */ + pin = old_ref_mod >= 0 && new_ref_mod < 0; } - if (!last_ref) - return; - - if (btrfs_header_generation(buf) == trans->transid) { + if (last_ref && btrfs_header_generation(buf) == trans->transid) { struct btrfs_block_group_cache *cache; if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) { @@ -7191,6 +7227,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans, goto out; } + pin = 0; cache = btrfs_lookup_block_group(fs_info, buf->start); if (btrfs_header_flag(buf, BTRFS_HEADER_FLAG_WRITTEN)) { @@ -7206,18 +7243,19 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans, btrfs_free_reserved_bytes(cache, buf->len, 0); btrfs_put_block_group(cache); trace_btrfs_reserved_extent_free(fs_info, buf->start, buf->len); - pin = 0; } out: if (pin) add_pinned_bytes(fs_info, buf->len, btrfs_header_level(buf), root->root_key.objectid); - /* - * Deleting the buffer, clear the corrupt flag since it doesn't matter - * anymore. - */ - clear_bit(EXTENT_BUFFER_CORRUPT, &buf->bflags); + if (last_ref) { + /* + * Deleting the buffer, clear the corrupt flag since it doesn't + * matter anymore. + */ + clear_bit(EXTENT_BUFFER_CORRUPT, &buf->bflags); + } } /* Can return -ENOMEM */ @@ -7226,12 +7264,12 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, u64 owner, u64 offset) { + int old_ref_mod, new_ref_mod; int ret; if (btrfs_is_testing(fs_info)) return 0; - add_pinned_bytes(fs_info, num_bytes, owner, root_objectid); /* * tree log blocks never actually go into the extent allocation @@ -7241,19 +7279,25 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, WARN_ON(owner >= BTRFS_FIRST_FREE_OBJECTID); /* unlocks the pinned mutex */ btrfs_pin_extent(fs_info, bytenr, num_bytes, 1); + old_ref_mod = new_ref_mod = 0; ret = 0; } else if (owner < BTRFS_FIRST_FREE_OBJECTID) { ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr, - num_bytes, - parent, root_objectid, (int)owner, - BTRFS_DROP_DELAYED_REF, NULL); + num_bytes, parent, + root_objectid, (int)owner, + BTRFS_DROP_DELAYED_REF, NULL, + &old_ref_mod, &new_ref_mod); } else { ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr, - num_bytes, - parent, root_objectid, owner, - offset, 0, - BTRFS_DROP_DELAYED_REF); + num_bytes, parent, + root_objectid, owner, offset, + 0, BTRFS_DROP_DELAYED_REF, + &old_ref_mod, &new_ref_mod); } + + if (ret == 0 && old_ref_mod >= 0 && new_ref_mod < 0) + add_pinned_bytes(fs_info, num_bytes, owner, root_objectid); + return ret; } @@ -7956,7 +8000,7 @@ int btrfs_reserve_extent(struct btrfs_root *root, u64 ram_bytes, u64 flags; int ret; - flags = btrfs_get_alloc_profile(root, is_data); + flags = get_alloc_profile_by_root(root, is_data); again: WARN_ON(num_bytes < fs_info->sectorsize); ret = find_free_extent(fs_info, ram_bytes, num_bytes, empty_size, @@ -8200,9 +8244,9 @@ int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, BUG_ON(root_objectid == BTRFS_TREE_LOG_OBJECTID); ret = btrfs_add_delayed_data_ref(fs_info, trans, ins->objectid, - ins->offset, 0, - root_objectid, owner, offset, - ram_bytes, BTRFS_ADD_DELAYED_EXTENT); + ins->offset, 0, root_objectid, owner, + offset, ram_bytes, + BTRFS_ADD_DELAYED_EXTENT, NULL, NULL); return ret; } @@ -8422,11 +8466,11 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, extent_op->is_data = false; extent_op->level = level; - ret = btrfs_add_delayed_tree_ref(fs_info, trans, - ins.objectid, ins.offset, - parent, root_objectid, level, + ret = btrfs_add_delayed_tree_ref(fs_info, trans, ins.objectid, + ins.offset, parent, + root_objectid, level, BTRFS_ADD_DELAYED_EXTENT, - extent_op); + extent_op, NULL, NULL); if (ret) goto out_free_delayed; } @@ -10059,19 +10103,9 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info) } trace_btrfs_add_block_group(info, cache, 0); - ret = update_space_info(info, cache->flags, found_key.offset, - btrfs_block_group_used(&cache->item), - cache->bytes_super, &space_info); - if (ret) { - btrfs_remove_free_space_cache(cache); - spin_lock(&info->block_group_cache_lock); - rb_erase(&cache->cache_node, - &info->block_group_cache_tree); - RB_CLEAR_NODE(&cache->cache_node); - spin_unlock(&info->block_group_cache_lock); - btrfs_put_block_group(cache); - goto error; - } + update_space_info(info, cache->flags, found_key.offset, + btrfs_block_group_used(&cache->item), + cache->bytes_super, &space_info); cache->space_info = space_info; @@ -10203,16 +10237,19 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, } #endif /* - * Call to ensure the corresponding space_info object is created and - * assigned to our block group, but don't update its counters just yet. - * We want our bg to be added to the rbtree with its ->space_info set. + * Ensure the corresponding space_info object is created and + * assigned to our block group. We want our bg to be added to the rbtree + * with its ->space_info set. */ - ret = update_space_info(fs_info, cache->flags, 0, 0, 0, - &cache->space_info); - if (ret) { - btrfs_remove_free_space_cache(cache); - btrfs_put_block_group(cache); - return ret; + cache->space_info = __find_space_info(fs_info, cache->flags); + if (!cache->space_info) { + ret = create_space_info(fs_info, cache->flags, + &cache->space_info); + if (ret) { + btrfs_remove_free_space_cache(cache); + btrfs_put_block_group(cache); + return ret; + } } ret = btrfs_add_block_group_cache(fs_info, cache); @@ -10227,18 +10264,8 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, * the rbtree, update the space info's counters. */ trace_btrfs_add_block_group(fs_info, cache, 1); - ret = update_space_info(fs_info, cache->flags, size, bytes_used, + update_space_info(fs_info, cache->flags, size, bytes_used, cache->bytes_super, &cache->space_info); - if (ret) { - btrfs_remove_free_space_cache(cache); - spin_lock(&fs_info->block_group_cache_lock); - rb_erase(&cache->cache_node, - &fs_info->block_group_cache_tree); - RB_CLEAR_NODE(&cache->cache_node); - spin_unlock(&fs_info->block_group_cache_lock); - btrfs_put_block_group(cache); - return ret; - } update_global_block_rsv(fs_info); __link_block_group(cache->space_info, cache); @@ -10786,21 +10813,21 @@ int btrfs_init_space_info(struct btrfs_fs_info *fs_info) mixed = 1; flags = BTRFS_BLOCK_GROUP_SYSTEM; - ret = update_space_info(fs_info, flags, 0, 0, 0, &space_info); + ret = create_space_info(fs_info, flags, &space_info); if (ret) goto out; if (mixed) { flags = BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA; - ret = update_space_info(fs_info, flags, 0, 0, 0, &space_info); + ret = create_space_info(fs_info, flags, &space_info); } else { flags = BTRFS_BLOCK_GROUP_METADATA; - ret = update_space_info(fs_info, flags, 0, 0, 0, &space_info); + ret = create_space_info(fs_info, flags, &space_info); if (ret) goto out; flags = BTRFS_BLOCK_GROUP_DATA; - ret = update_space_info(fs_info, flags, 0, 0, 0, &space_info); + ret = create_space_info(fs_info, flags, &space_info); } out: return ret; diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index d1cd60140817..7a18b5762ac9 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -87,19 +87,9 @@ void btrfs_leak_debug_check(void) static inline void __btrfs_debug_check_extent_io_range(const char *caller, struct extent_io_tree *tree, u64 start, u64 end) { - struct inode *inode; - u64 isize; - - if (!tree->mapping) - return; - - inode = tree->mapping->host; - isize = i_size_read(inode); - if (end >= PAGE_SIZE && (end % 2) == 0 && end != isize - 1) { - btrfs_debug_rl(BTRFS_I(inode)->root->fs_info, - "%s: ino %llu isize %llu odd range [%llu,%llu]", - caller, btrfs_ino(BTRFS_I(inode)), isize, start, end); - } + if (tree->ops && tree->ops->check_extent_io_range) + tree->ops->check_extent_io_range(tree->private_data, caller, + start, end); } #else #define btrfs_leak_debug_add(new, head) do {} while (0) @@ -154,9 +144,9 @@ static noinline void flush_write_bio(void *data); static inline struct btrfs_fs_info * tree_fs_info(struct extent_io_tree *tree) { - if (!tree->mapping) - return NULL; - return btrfs_sb(tree->mapping->host->i_sb); + if (tree->ops) + return tree->ops->tree_fs_info(tree->private_data); + return NULL; } int __init extent_io_init(void) @@ -214,13 +204,13 @@ void extent_io_exit(void) } void extent_io_tree_init(struct extent_io_tree *tree, - struct address_space *mapping) + void *private_data) { tree->state = RB_ROOT; tree->ops = NULL; tree->dirty_bytes = 0; spin_lock_init(&tree->lock); - tree->mapping = mapping; + tree->private_data = private_data; } static struct extent_state *alloc_extent_state(gfp_t mask) @@ -370,8 +360,7 @@ static void merge_cb(struct extent_io_tree *tree, struct extent_state *new, struct extent_state *other) { if (tree->ops && tree->ops->merge_extent_hook) - tree->ops->merge_extent_hook(tree->mapping->host, new, - other); + tree->ops->merge_extent_hook(tree->private_data, new, other); } /* @@ -422,15 +411,14 @@ static void set_state_cb(struct extent_io_tree *tree, struct extent_state *state, unsigned *bits) { if (tree->ops && tree->ops->set_bit_hook) - tree->ops->set_bit_hook(tree->mapping->host, state, bits); + tree->ops->set_bit_hook(tree->private_data, state, bits); } static void clear_state_cb(struct extent_io_tree *tree, struct extent_state *state, unsigned *bits) { if (tree->ops && tree->ops->clear_bit_hook) - tree->ops->clear_bit_hook(BTRFS_I(tree->mapping->host), - state, bits); + tree->ops->clear_bit_hook(tree->private_data, state, bits); } static void set_state_bits(struct extent_io_tree *tree, @@ -479,7 +467,7 @@ static void split_cb(struct extent_io_tree *tree, struct extent_state *orig, u64 split) { if (tree->ops && tree->ops->split_extent_hook) - tree->ops->split_extent_hook(tree->mapping->host, orig, split); + tree->ops->split_extent_hook(tree->private_data, orig, split); } /* @@ -1403,17 +1391,7 @@ void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end) */ static void set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end) { - unsigned long index = start >> PAGE_SHIFT; - unsigned long end_index = end >> PAGE_SHIFT; - struct page *page; - - while (index <= end_index) { - page = find_get_page(tree->mapping, index); - BUG_ON(!page); /* Pages should be in the extent_io_tree */ - set_page_writeback(page); - put_page(page); - index++; - } + tree->ops->set_range_writeback(tree->private_data, start, end); } /* find the first state struct with 'bits' set after 'start', and @@ -1962,11 +1940,12 @@ static void check_page_uptodate(struct extent_io_tree *tree, struct page *page) SetPageUptodate(page); } -int free_io_failure(struct btrfs_inode *inode, struct io_failure_record *rec) +int free_io_failure(struct extent_io_tree *failure_tree, + struct extent_io_tree *io_tree, + struct io_failure_record *rec) { int ret; int err = 0; - struct extent_io_tree *failure_tree = &inode->io_failure_tree; set_state_failrec(failure_tree, rec->start, NULL); ret = clear_extent_bits(failure_tree, rec->start, @@ -1975,7 +1954,7 @@ int free_io_failure(struct btrfs_inode *inode, struct io_failure_record *rec) if (ret) err = ret; - ret = clear_extent_bits(&inode->io_tree, rec->start, + ret = clear_extent_bits(io_tree, rec->start, rec->start + rec->len - 1, EXTENT_DAMAGED); if (ret && !err) @@ -1995,11 +1974,10 @@ int free_io_failure(struct btrfs_inode *inode, struct io_failure_record *rec) * currently, there can be no more than two copies of every data bit. thus, * exactly one rewrite is required. */ -int repair_io_failure(struct btrfs_inode *inode, u64 start, u64 length, - u64 logical, struct page *page, - unsigned int pg_offset, int mirror_num) +int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, + u64 length, u64 logical, struct page *page, + unsigned int pg_offset, int mirror_num) { - struct btrfs_fs_info *fs_info = inode->root->fs_info; struct bio *bio; struct btrfs_device *dev; u64 map_length = 0; @@ -2010,9 +1988,7 @@ int repair_io_failure(struct btrfs_inode *inode, u64 start, u64 length, ASSERT(!(fs_info->sb->s_flags & MS_RDONLY)); BUG_ON(!mirror_num); - bio = btrfs_io_bio_alloc(GFP_NOFS, 1); - if (!bio) - return -EIO; + bio = btrfs_io_bio_alloc(1); bio->bi_iter.bi_size = 0; map_length = length; @@ -2071,7 +2047,7 @@ int repair_io_failure(struct btrfs_inode *inode, u64 start, u64 length, btrfs_info_rl_in_rcu(fs_info, "read error corrected: ino %llu off %llu (dev %s sector %llu)", - btrfs_ino(inode), start, + ino, start, rcu_str_deref(dev->name), sector); btrfs_bio_counter_dec(fs_info); bio_put(bio); @@ -2091,8 +2067,7 @@ int repair_eb_io_failure(struct btrfs_fs_info *fs_info, for (i = 0; i < num_pages; i++) { struct page *p = eb->pages[i]; - ret = repair_io_failure(BTRFS_I(fs_info->btree_inode), start, - PAGE_SIZE, start, p, + ret = repair_io_failure(fs_info, 0, start, PAGE_SIZE, start, p, start - page_offset(p), mirror_num); if (ret) break; @@ -2106,24 +2081,24 @@ int repair_eb_io_failure(struct btrfs_fs_info *fs_info, * each time an IO finishes, we do a fast check in the IO failure tree * to see if we need to process or clean up an io_failure_record */ -int clean_io_failure(struct btrfs_inode *inode, u64 start, struct page *page, - unsigned int pg_offset) +int clean_io_failure(struct btrfs_fs_info *fs_info, + struct extent_io_tree *failure_tree, + struct extent_io_tree *io_tree, u64 start, + struct page *page, u64 ino, unsigned int pg_offset) { u64 private; struct io_failure_record *failrec; - struct btrfs_fs_info *fs_info = inode->root->fs_info; struct extent_state *state; int num_copies; int ret; private = 0; - ret = count_range_bits(&inode->io_failure_tree, &private, - (u64)-1, 1, EXTENT_DIRTY, 0); + ret = count_range_bits(failure_tree, &private, (u64)-1, 1, + EXTENT_DIRTY, 0); if (!ret) return 0; - ret = get_state_failrec(&inode->io_failure_tree, start, - &failrec); + ret = get_state_failrec(failure_tree, start, &failrec); if (ret) return 0; @@ -2139,25 +2114,25 @@ int clean_io_failure(struct btrfs_inode *inode, u64 start, struct page *page, if (fs_info->sb->s_flags & MS_RDONLY) goto out; - spin_lock(&inode->io_tree.lock); - state = find_first_extent_bit_state(&inode->io_tree, + spin_lock(&io_tree->lock); + state = find_first_extent_bit_state(io_tree, failrec->start, EXTENT_LOCKED); - spin_unlock(&inode->io_tree.lock); + spin_unlock(&io_tree->lock); if (state && state->start <= failrec->start && state->end >= failrec->start + failrec->len - 1) { num_copies = btrfs_num_copies(fs_info, failrec->logical, failrec->len); if (num_copies > 1) { - repair_io_failure(inode, start, failrec->len, - failrec->logical, page, - pg_offset, failrec->failed_mirror); + repair_io_failure(fs_info, ino, start, failrec->len, + failrec->logical, page, pg_offset, + failrec->failed_mirror); } } out: - free_io_failure(inode, failrec); + free_io_failure(failure_tree, io_tree, failrec); return 0; } @@ -2357,10 +2332,7 @@ struct bio *btrfs_create_repair_bio(struct inode *inode, struct bio *failed_bio, struct btrfs_io_bio *btrfs_failed_bio; struct btrfs_io_bio *btrfs_bio; - bio = btrfs_io_bio_alloc(GFP_NOFS, 1); - if (!bio) - return NULL; - + bio = btrfs_io_bio_alloc(1); bio->bi_end_io = endio_func; bio->bi_iter.bi_sector = failrec->logical >> 9; bio->bi_bdev = fs_info->fs_devices->latest_bdev; @@ -2398,6 +2370,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset, struct io_failure_record *failrec; struct inode *inode = page->mapping->host; struct extent_io_tree *tree = &BTRFS_I(inode)->io_tree; + struct extent_io_tree *failure_tree = &BTRFS_I(inode)->io_failure_tree; struct bio *bio; int read_mode = 0; blk_status_t status; @@ -2411,7 +2384,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset, ret = btrfs_check_repairable(inode, failed_bio, failrec, failed_mirror); if (!ret) { - free_io_failure(BTRFS_I(inode), failrec); + free_io_failure(failure_tree, tree, failrec); return -EIO; } @@ -2424,7 +2397,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset, (int)phy_offset, failed_bio->bi_end_io, NULL); if (!bio) { - free_io_failure(BTRFS_I(inode), failrec); + free_io_failure(failure_tree, tree, failrec); return -EIO; } bio_set_op_attrs(bio, REQ_OP_READ, read_mode); @@ -2433,10 +2406,10 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset, "Repair Read Error: submitting new read[%#x] to this_mirror=%d, in_validation=%d", read_mode, failrec->this_mirror, failrec->in_validation); - status = tree->ops->submit_bio_hook(inode, bio, failrec->this_mirror, + status = tree->ops->submit_bio_hook(tree->private_data, bio, failrec->this_mirror, failrec->bio_flags, 0); if (status) { - free_io_failure(BTRFS_I(inode), failrec); + free_io_failure(failure_tree, tree, failrec); bio_put(bio); ret = blk_status_to_errno(status); } @@ -2542,7 +2515,7 @@ static void end_bio_extent_readpage(struct bio *bio) struct bio_vec *bvec; int uptodate = !bio->bi_status; struct btrfs_io_bio *io_bio = btrfs_io_bio(bio); - struct extent_io_tree *tree; + struct extent_io_tree *tree, *failure_tree; u64 offset = 0; u64 start; u64 end; @@ -2563,6 +2536,7 @@ static void end_bio_extent_readpage(struct bio *bio) (u64)bio->bi_iter.bi_sector, bio->bi_status, io_bio->mirror_num); tree = &BTRFS_I(inode)->io_tree; + failure_tree = &BTRFS_I(inode)->io_failure_tree; /* We always issue full-page reads, but if some block * in a page fails to read, blk_update_request() will @@ -2592,8 +2566,10 @@ static void end_bio_extent_readpage(struct bio *bio) if (ret) uptodate = 0; else - clean_io_failure(BTRFS_I(inode), start, - page, 0); + clean_io_failure(BTRFS_I(inode)->root->fs_info, + failure_tree, tree, start, + page, + btrfs_ino(BTRFS_I(inode)), 0); } if (likely(uptodate)) @@ -2682,67 +2658,70 @@ readpage_ok: } /* - * this allocates from the btrfs_bioset. We're returning a bio right now - * but you can call btrfs_io_bio for the appropriate container_of magic + * Initialize the members up to but not including 'bio'. Use after allocating a + * new bio by bio_alloc_bioset as it does not initialize the bytes outside of + * 'bio' because use of __GFP_ZERO is not supported. */ -struct bio * -btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs, - gfp_t gfp_flags) +static inline void btrfs_io_bio_init(struct btrfs_io_bio *btrfs_bio) { - struct btrfs_io_bio *btrfs_bio; - struct bio *bio; - - bio = bio_alloc_bioset(gfp_flags, nr_vecs, btrfs_bioset); + memset(btrfs_bio, 0, offsetof(struct btrfs_io_bio, bio)); +} - if (bio == NULL && (current->flags & PF_MEMALLOC)) { - while (!bio && (nr_vecs /= 2)) { - bio = bio_alloc_bioset(gfp_flags, - nr_vecs, btrfs_bioset); - } - } +/* + * The following helpers allocate a bio. As it's backed by a bioset, it'll + * never fail. We're returning a bio right now but you can call btrfs_io_bio + * for the appropriate container_of magic + */ +struct bio *btrfs_bio_alloc(struct block_device *bdev, u64 first_byte) +{ + struct bio *bio; - if (bio) { - bio->bi_bdev = bdev; - bio->bi_iter.bi_sector = first_sector; - btrfs_bio = btrfs_io_bio(bio); - btrfs_bio->csum = NULL; - btrfs_bio->csum_allocated = NULL; - btrfs_bio->end_io = NULL; - } + bio = bio_alloc_bioset(GFP_NOFS, BIO_MAX_PAGES, btrfs_bioset); + bio->bi_bdev = bdev; + bio->bi_iter.bi_sector = first_byte >> 9; + btrfs_io_bio_init(btrfs_io_bio(bio)); return bio; } -struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask) +struct bio *btrfs_bio_clone(struct bio *bio) { struct btrfs_io_bio *btrfs_bio; struct bio *new; - new = bio_clone_bioset(bio, gfp_mask, btrfs_bioset); - if (new) { - btrfs_bio = btrfs_io_bio(new); - btrfs_bio->csum = NULL; - btrfs_bio->csum_allocated = NULL; - btrfs_bio->end_io = NULL; - } + /* Bio allocation backed by a bioset does not fail */ + new = bio_clone_fast(bio, GFP_NOFS, btrfs_bioset); + btrfs_bio = btrfs_io_bio(new); + btrfs_io_bio_init(btrfs_bio); + btrfs_bio->iter = bio->bi_iter; return new; } -/* this also allocates from the btrfs_bioset */ -struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs) +struct bio *btrfs_io_bio_alloc(unsigned int nr_iovecs) { - struct btrfs_io_bio *btrfs_bio; struct bio *bio; - bio = bio_alloc_bioset(gfp_mask, nr_iovecs, btrfs_bioset); - if (bio) { - btrfs_bio = btrfs_io_bio(bio); - btrfs_bio->csum = NULL; - btrfs_bio->csum_allocated = NULL; - btrfs_bio->end_io = NULL; - } + /* Bio allocation backed by a bioset does not fail */ + bio = bio_alloc_bioset(GFP_NOFS, nr_iovecs, btrfs_bioset); + btrfs_io_bio_init(btrfs_io_bio(bio)); return bio; } +struct bio *btrfs_bio_clone_partial(struct bio *orig, int offset, int size) +{ + struct bio *bio; + struct btrfs_io_bio *btrfs_bio; + + /* this will never fail when it's backed by a bioset */ + bio = bio_clone_fast(orig, GFP_NOFS, btrfs_bioset); + ASSERT(bio); + + btrfs_bio = btrfs_io_bio(bio); + btrfs_io_bio_init(btrfs_bio); + + bio_trim(bio, offset >> 9, size >> 9); + btrfs_bio->iter = bio->bi_iter; + return bio; +} static int __must_check submit_one_bio(struct bio *bio, int mirror_num, unsigned long bio_flags) @@ -2759,7 +2738,7 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num, bio_get(bio); if (tree->ops) - ret = tree->ops->submit_bio_hook(page->mapping->host, bio, + ret = tree->ops->submit_bio_hook(tree->private_data, bio, mirror_num, bio_flags, start); else btrfsic_submit_bio(bio); @@ -2822,11 +2801,7 @@ static int submit_extent_page(int op, int op_flags, struct extent_io_tree *tree, } } - bio = btrfs_bio_alloc(bdev, sector, BIO_MAX_PAGES, - GFP_NOFS | __GFP_HIGH); - if (!bio) - return -ENOMEM; - + bio = btrfs_bio_alloc(bdev, sector << 9); bio_add_page(bio, page, page_size, offset); bio->bi_end_io = end_io_func; bio->bi_private = tree; @@ -3762,7 +3737,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb, * header 0 1 2 .. N ... data_N .. data_2 data_1 data_0 */ start = btrfs_item_nr_offset(nritems); - end = btrfs_leaf_data(eb) + leaf_data_end(fs_info, eb); + end = BTRFS_LEAF_DATA_OFFSET + leaf_data_end(fs_info, eb); memzero_extent_buffer(eb, start, end - start); } @@ -4468,29 +4443,25 @@ try_submit_last: } /* - * Sanity check for fiemap cache + * Emit last fiemap cache * - * All fiemap cache should be submitted by emit_fiemap_extent() - * Iteration should be terminated either by last fiemap extent or - * fieinfo->fi_extents_max. - * So no cached fiemap should exist. + * The last fiemap cache may still be cached in the following case: + * 0 4k 8k + * |<- Fiemap range ->| + * |<------------ First extent ----------->| + * + * In this case, the first extent range will be cached but not emitted. + * So we must emit it before ending extent_fiemap(). */ -static int check_fiemap_cache(struct btrfs_fs_info *fs_info, - struct fiemap_extent_info *fieinfo, - struct fiemap_cache *cache) +static int emit_last_fiemap_cache(struct btrfs_fs_info *fs_info, + struct fiemap_extent_info *fieinfo, + struct fiemap_cache *cache) { int ret; if (!cache->cached) return 0; - /* Small and recoverbale problem, only to info developer */ -#ifdef CONFIG_BTRFS_DEBUG - WARN_ON(1); -#endif - btrfs_warn(fs_info, - "unhandled fiemap cache detected: offset=%llu phys=%llu len=%llu flags=0x%x", - cache->offset, cache->phys, cache->len, cache->flags); ret = fiemap_fill_next_extent(fieinfo, cache->offset, cache->phys, cache->len, cache->flags); cache->cached = false; @@ -4706,7 +4677,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, } out_free: if (!ret) - ret = check_fiemap_cache(root->fs_info, fieinfo, &cache); + ret = emit_last_fiemap_cache(root->fs_info, fieinfo, &cache); free_extent_map(em); out: btrfs_free_path(path); diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 487ca0207cb6..3fb8513bf02e 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -92,9 +92,9 @@ struct btrfs_inode; struct btrfs_io_bio; struct io_failure_record; -typedef blk_status_t (extent_submit_bio_hook_t)(struct inode *inode, - struct bio *bio, int mirror_num, unsigned long bio_flags, - u64 bio_offset); +typedef blk_status_t (extent_submit_bio_hook_t)(void *private_data, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset); struct extent_io_ops { /* * The following callbacks must be allways defined, the function @@ -108,32 +108,36 @@ struct extent_io_ops { size_t size, struct bio *bio, unsigned long bio_flags); int (*readpage_io_failed_hook)(struct page *page, int failed_mirror); + struct btrfs_fs_info *(*tree_fs_info)(void *private_data); + void (*set_range_writeback)(void *private_data, u64 start, u64 end); /* * Optional hooks, called if the pointer is not NULL */ - int (*fill_delalloc)(struct inode *inode, struct page *locked_page, + int (*fill_delalloc)(void *private_data, struct page *locked_page, u64 start, u64 end, int *page_started, unsigned long *nr_written); int (*writepage_start_hook)(struct page *page, u64 start, u64 end); void (*writepage_end_io_hook)(struct page *page, u64 start, u64 end, struct extent_state *state, int uptodate); - void (*set_bit_hook)(struct inode *inode, struct extent_state *state, + void (*set_bit_hook)(void *private_data, struct extent_state *state, unsigned *bits); - void (*clear_bit_hook)(struct btrfs_inode *inode, + void (*clear_bit_hook)(void *private_data, struct extent_state *state, unsigned *bits); - void (*merge_extent_hook)(struct inode *inode, + void (*merge_extent_hook)(void *private_data, struct extent_state *new, struct extent_state *other); - void (*split_extent_hook)(struct inode *inode, + void (*split_extent_hook)(void *private_data, struct extent_state *orig, u64 split); + void (*check_extent_io_range)(void *private_data, const char *caller, + u64 start, u64 end); }; struct extent_io_tree { struct rb_root state; - struct address_space *mapping; + void *private_data; u64 dirty_bytes; int track_uptodate; spinlock_t lock; @@ -205,12 +209,46 @@ struct extent_buffer { */ struct extent_changeset { /* How many bytes are set/cleared in this operation */ - u64 bytes_changed; + unsigned int bytes_changed; /* Changed ranges */ struct ulist range_changed; }; +static inline void extent_changeset_init(struct extent_changeset *changeset) +{ + changeset->bytes_changed = 0; + ulist_init(&changeset->range_changed); +} + +static inline struct extent_changeset *extent_changeset_alloc(void) +{ + struct extent_changeset *ret; + + ret = kmalloc(sizeof(*ret), GFP_KERNEL); + if (!ret) + return NULL; + + extent_changeset_init(ret); + return ret; +} + +static inline void extent_changeset_release(struct extent_changeset *changeset) +{ + if (!changeset) + return; + changeset->bytes_changed = 0; + ulist_release(&changeset->range_changed); +} + +static inline void extent_changeset_free(struct extent_changeset *changeset) +{ + if (!changeset) + return; + extent_changeset_release(changeset); + kfree(changeset); +} + static inline void extent_set_compress_type(unsigned long *bio_flags, int compress_type) { @@ -230,8 +268,7 @@ typedef struct extent_map *(get_extent_t)(struct btrfs_inode *inode, u64 start, u64 len, int create); -void extent_io_tree_init(struct extent_io_tree *tree, - struct address_space *mapping); +void extent_io_tree_init(struct extent_io_tree *tree, void *private_data); int try_release_extent_mapping(struct extent_map_tree *map, struct extent_io_tree *tree, struct page *page, gfp_t mask); @@ -459,20 +496,21 @@ void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end, u64 delalloc_end, struct page *locked_page, unsigned bits_to_clear, unsigned long page_ops); -struct bio * -btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs, - gfp_t gfp_flags); -struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs); -struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask); +struct bio *btrfs_bio_alloc(struct block_device *bdev, u64 first_byte); +struct bio *btrfs_io_bio_alloc(unsigned int nr_iovecs); +struct bio *btrfs_bio_clone(struct bio *bio); +struct bio *btrfs_bio_clone_partial(struct bio *orig, int offset, int size); struct btrfs_fs_info; struct btrfs_inode; -int repair_io_failure(struct btrfs_inode *inode, u64 start, u64 length, - u64 logical, struct page *page, - unsigned int pg_offset, int mirror_num); -int clean_io_failure(struct btrfs_inode *inode, u64 start, - struct page *page, unsigned int pg_offset); +int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, + u64 length, u64 logical, struct page *page, + unsigned int pg_offset, int mirror_num); +int clean_io_failure(struct btrfs_fs_info *fs_info, + struct extent_io_tree *failure_tree, + struct extent_io_tree *io_tree, u64 start, + struct page *page, u64 ino, unsigned int pg_offset); void end_extent_writepage(struct page *page, int err, u64 start, u64 end); int repair_eb_io_failure(struct btrfs_fs_info *fs_info, struct extent_buffer *eb, int mirror_num); @@ -507,7 +545,9 @@ struct bio *btrfs_create_repair_bio(struct inode *inode, struct bio *failed_bio, struct io_failure_record *failrec, struct page *page, int pg_offset, int icsum, bio_end_io_t *endio_func, void *data); -int free_io_failure(struct btrfs_inode *inode, struct io_failure_record *rec); +int free_io_failure(struct extent_io_tree *failure_tree, + struct extent_io_tree *io_tree, + struct io_failure_record *rec); #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS noinline u64 find_lock_delalloc_range(struct inode *inode, struct extent_io_tree *tree, diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 5b1c7090e546..fdcb41002623 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -164,7 +164,8 @@ static blk_status_t __btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio u64 logical_offset, u32 *dst, int dio) { struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; struct btrfs_io_bio *btrfs_bio = btrfs_io_bio(bio); struct btrfs_csum_item *item = NULL; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; @@ -177,7 +178,7 @@ static blk_status_t __btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio u64 page_bytes_left; u32 diff; int nblocks; - int count = 0, i; + int count = 0; u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); path = btrfs_alloc_path(); @@ -206,8 +207,6 @@ static blk_status_t __btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio if (bio->bi_iter.bi_size > PAGE_SIZE * 8) path->reada = READA_FORWARD; - WARN_ON(bio->bi_vcnt <= 0); - /* * the free space stuff is only read when it hasn't been * updated in the current transaction. So, we can safely @@ -223,13 +222,13 @@ static blk_status_t __btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio if (dio) offset = logical_offset; - bio_for_each_segment_all(bvec, bio, i) { - page_bytes_left = bvec->bv_len; + bio_for_each_segment(bvec, bio, iter) { + page_bytes_left = bvec.bv_len; if (count) goto next; if (!dio) - offset = page_offset(bvec->bv_page) + bvec->bv_offset; + offset = page_offset(bvec.bv_page) + bvec.bv_offset; count = btrfs_find_ordered_sum(inode, offset, disk_bytenr, (u32 *)csum, nblocks); if (count) @@ -440,15 +439,15 @@ blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, struct btrfs_ordered_sum *sums; struct btrfs_ordered_extent *ordered = NULL; char *data; - struct bio_vec *bvec; + struct bvec_iter iter; + struct bio_vec bvec; int index; int nr_sectors; - int i, j; unsigned long total_bytes = 0; unsigned long this_sum_bytes = 0; + int i; u64 offset; - WARN_ON(bio->bi_vcnt <= 0); sums = kzalloc(btrfs_ordered_sum_size(fs_info, bio->bi_iter.bi_size), GFP_NOFS); if (!sums) @@ -465,19 +464,19 @@ blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, sums->bytenr = (u64)bio->bi_iter.bi_sector << 9; index = 0; - bio_for_each_segment_all(bvec, bio, j) { + bio_for_each_segment(bvec, bio, iter) { if (!contig) - offset = page_offset(bvec->bv_page) + bvec->bv_offset; + offset = page_offset(bvec.bv_page) + bvec.bv_offset; if (!ordered) { ordered = btrfs_lookup_ordered_extent(inode, offset); BUG_ON(!ordered); /* Logic error */ } - data = kmap_atomic(bvec->bv_page); + data = kmap_atomic(bvec.bv_page); nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, - bvec->bv_len + fs_info->sectorsize + bvec.bv_len + fs_info->sectorsize - 1); for (i = 0; i < nr_sectors; i++) { @@ -504,12 +503,12 @@ blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio, + total_bytes; index = 0; - data = kmap_atomic(bvec->bv_page); + data = kmap_atomic(bvec.bv_page); } sums->sums[index] = ~(u32)0; sums->sums[index] - = btrfs_csum_data(data + bvec->bv_offset + = btrfs_csum_data(data + bvec.bv_offset + (i * fs_info->sectorsize), sums->sums[index], fs_info->sectorsize); diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 59e2dccdf75b..24338702ea5b 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1581,6 +1581,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, struct btrfs_root *root = BTRFS_I(inode)->root; struct page **pages = NULL; struct extent_state *cached_state = NULL; + struct extent_changeset *data_reserved = NULL; u64 release_bytes = 0; u64 lockstart; u64 lockend; @@ -1628,7 +1629,9 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, reserve_bytes = round_up(write_bytes + sector_offset, fs_info->sectorsize); - ret = btrfs_check_data_free_space(inode, pos, write_bytes); + extent_changeset_release(data_reserved); + ret = btrfs_check_data_free_space(inode, &data_reserved, pos, + write_bytes); if (ret < 0) { if ((BTRFS_I(inode)->flags & (BTRFS_INODE_NODATACOW | BTRFS_INODE_PREALLOC)) && @@ -1657,8 +1660,9 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, reserve_bytes); if (ret) { if (!only_release_metadata) - btrfs_free_reserved_data_space(inode, pos, - write_bytes); + btrfs_free_reserved_data_space(inode, + data_reserved, pos, + write_bytes); else btrfs_end_write_no_snapshoting(root); break; @@ -1740,8 +1744,9 @@ again: __pos = round_down(pos, fs_info->sectorsize) + (dirty_pages << PAGE_SHIFT); - btrfs_delalloc_release_space(inode, __pos, - release_bytes); + btrfs_delalloc_release_space(inode, + data_reserved, __pos, + release_bytes); } } @@ -1796,12 +1801,13 @@ again: btrfs_delalloc_release_metadata(BTRFS_I(inode), release_bytes); } else { - btrfs_delalloc_release_space(inode, - round_down(pos, fs_info->sectorsize), - release_bytes); + btrfs_delalloc_release_space(inode, data_reserved, + round_down(pos, fs_info->sectorsize), + release_bytes); } } + extent_changeset_free(data_reserved); return num_written ? num_written : ret; } @@ -2405,10 +2411,13 @@ out: */ static int find_first_non_hole(struct inode *inode, u64 *start, u64 *len) { + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct extent_map *em; int ret = 0; - em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, *start, *len, 0); + em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, + round_down(*start, fs_info->sectorsize), + round_up(*len, fs_info->sectorsize), 0); if (IS_ERR(em)) return PTR_ERR(em); @@ -2784,6 +2793,7 @@ static long btrfs_fallocate(struct file *file, int mode, { struct inode *inode = file_inode(file); struct extent_state *cached_state = NULL; + struct extent_changeset *data_reserved = NULL; struct falloc_range *range; struct falloc_range *tmp; struct list_head reserve_list; @@ -2913,8 +2923,8 @@ static long btrfs_fallocate(struct file *file, int mode, free_extent_map(em); break; } - ret = btrfs_qgroup_reserve_data(inode, cur_offset, - last_byte - cur_offset); + ret = btrfs_qgroup_reserve_data(inode, &data_reserved, + cur_offset, last_byte - cur_offset); if (ret < 0) { free_extent_map(em); break; @@ -2925,8 +2935,8 @@ static long btrfs_fallocate(struct file *file, int mode, * range, free reserved data space first, otherwise * it'll result in false ENOSPC error. */ - btrfs_free_reserved_data_space(inode, cur_offset, - last_byte - cur_offset); + btrfs_free_reserved_data_space(inode, data_reserved, + cur_offset, last_byte - cur_offset); } free_extent_map(em); cur_offset = last_byte; @@ -2945,8 +2955,9 @@ static long btrfs_fallocate(struct file *file, int mode, range->len, i_blocksize(inode), offset + len, &alloc_hint); else - btrfs_free_reserved_data_space(inode, range->start, - range->len); + btrfs_free_reserved_data_space(inode, + data_reserved, range->start, + range->len); list_del(&range->list); kfree(range); } @@ -2984,8 +2995,9 @@ out: inode_unlock(inode); /* Let go of our reservation. */ if (ret != 0) - btrfs_free_reserved_data_space(inode, alloc_start, - alloc_end - cur_offset); + btrfs_free_reserved_data_space(inode, data_reserved, + alloc_start, alloc_end - cur_offset); + extent_changeset_free(data_reserved); return ret; } diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c index fc0bd8406758..a5e34de06c2f 100644 --- a/fs/btrfs/free-space-tree.c +++ b/fs/btrfs/free-space-tree.c @@ -17,7 +17,7 @@ */ #include <linux/kernel.h> -#include <linux/vmalloc.h> +#include <linux/sched/mm.h> #include "ctree.h" #include "disk-io.h" #include "locking.h" @@ -153,21 +153,21 @@ static inline u32 free_space_bitmap_size(u64 size, u32 sectorsize) static u8 *alloc_bitmap(u32 bitmap_size) { - void *mem; + u8 *ret; + unsigned int nofs_flag; /* - * The allocation size varies, observed numbers were < 4K up to 16K. - * Using vmalloc unconditionally would be too heavy, we'll try - * contiguous allocations first. + * GFP_NOFS doesn't work with kvmalloc(), but we really can't recurse + * into the filesystem as the free space bitmap can be modified in the + * critical section of a transaction commit. + * + * TODO: push the memalloc_nofs_{save,restore}() to the caller where we + * know that recursion is unsafe. */ - if (bitmap_size <= PAGE_SIZE) - return kzalloc(bitmap_size, GFP_NOFS); - - mem = kzalloc(bitmap_size, GFP_NOFS | __GFP_NOWARN); - if (mem) - return mem; - - return __vmalloc(bitmap_size, GFP_NOFS | __GFP_ZERO, PAGE_KERNEL); + nofs_flag = memalloc_nofs_save(); + ret = kvzalloc(bitmap_size, GFP_KERNEL); + memalloc_nofs_restore(nofs_flag); + return ret; } int convert_free_space_to_bitmaps(struct btrfs_trans_handle *trans, @@ -1188,11 +1188,7 @@ int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info) btrfs_set_fs_compat_ro(fs_info, FREE_SPACE_TREE_VALID); clear_bit(BTRFS_FS_CREATING_FREE_SPACE_TREE, &fs_info->flags); - ret = btrfs_commit_transaction(trans); - if (ret) - return ret; - - return 0; + return btrfs_commit_transaction(trans); abort: clear_bit(BTRFS_FS_CREATING_FREE_SPACE_TREE, &fs_info->flags); @@ -1277,11 +1273,7 @@ int btrfs_clear_free_space_tree(struct btrfs_fs_info *fs_info) free_extent_buffer(free_space_root->commit_root); kfree(free_space_root); - ret = btrfs_commit_transaction(trans); - if (ret) - return ret; - - return 0; + return btrfs_commit_transaction(trans); abort: btrfs_abort_transaction(trans, ret); diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index 5c6c20ec64d8..d02019747d00 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -400,6 +400,7 @@ int btrfs_save_ino_cache(struct btrfs_root *root, struct btrfs_path *path; struct inode *inode; struct btrfs_block_rsv *rsv; + struct extent_changeset *data_reserved = NULL; u64 num_bytes; u64 alloc_hint = 0; int ret; @@ -492,7 +493,7 @@ again: /* Just to make sure we have enough space */ prealloc += 8 * PAGE_SIZE; - ret = btrfs_delalloc_reserve_space(inode, 0, prealloc); + ret = btrfs_delalloc_reserve_space(inode, &data_reserved, 0, prealloc); if (ret) goto out_put; @@ -516,6 +517,7 @@ out: trans->bytes_reserved = num_bytes; btrfs_free_path(path); + extent_changeset_free(data_reserved); return ret; } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 556c93060606..8d050314591c 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -86,7 +86,6 @@ static const struct extent_io_ops btrfs_extent_io_ops; static struct kmem_cache *btrfs_inode_cachep; struct kmem_cache *btrfs_trans_handle_cachep; -struct kmem_cache *btrfs_transaction_cachep; struct kmem_cache *btrfs_path_cachep; struct kmem_cache *btrfs_free_space_cachep; @@ -178,7 +177,6 @@ static int insert_inline_extent(struct btrfs_trans_handle *trans, char *kaddr; unsigned long ptr; struct btrfs_file_extent_item *ei; - int err = 0; int ret; size_t cur_size = size; unsigned long offset; @@ -200,10 +198,8 @@ static int insert_inline_extent(struct btrfs_trans_handle *trans, path->leave_spinning = 1; ret = btrfs_insert_empty_item(trans, root, path, &key, datasize); - if (ret) { - err = ret; + if (ret) goto fail; - } } leaf = path->nodes[0]; ei = btrfs_item_ptr(leaf, path->slots[0], @@ -258,9 +254,8 @@ static int insert_inline_extent(struct btrfs_trans_handle *trans, BTRFS_I(inode)->disk_i_size = inode->i_size; ret = btrfs_update_inode(trans, root, inode); - return ret; fail: - return err; + return ret; } @@ -350,7 +345,7 @@ out: * And at reserve time, it's always aligned to page size, so * just free one page here. */ - btrfs_qgroup_free_data(inode, 0, PAGE_SIZE); + btrfs_qgroup_free_data(inode, NULL, 0, PAGE_SIZE); btrfs_free_path(path); btrfs_end_transaction(trans); return ret; @@ -608,12 +603,11 @@ cont: /* * one last check to make sure the compression is really a - * win, compare the page count read with the blocks on disk + * win, compare the page count read with the blocks on disk, + * compression must free at least one sector size */ total_in = ALIGN(total_in, PAGE_SIZE); - if (total_compressed >= total_in) { - will_compress = 0; - } else { + if (total_compressed + blocksize <= total_in) { num_bytes = total_in; *num_added += 1; @@ -1568,10 +1562,11 @@ static inline int need_force_cow(struct inode *inode, u64 start, u64 end) /* * extent_io.c call back to do delayed allocation processing */ -static int run_delalloc_range(struct inode *inode, struct page *locked_page, +static int run_delalloc_range(void *private_data, struct page *locked_page, u64 start, u64 end, int *page_started, unsigned long *nr_written) { + struct inode *inode = private_data; int ret; int force_cow = need_force_cow(inode, start, end); @@ -1595,9 +1590,10 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page, return ret; } -static void btrfs_split_extent_hook(struct inode *inode, +static void btrfs_split_extent_hook(void *private_data, struct extent_state *orig, u64 split) { + struct inode *inode = private_data; u64 size; /* not delalloc, ignore it */ @@ -1632,10 +1628,11 @@ static void btrfs_split_extent_hook(struct inode *inode, * extents, such as when we are doing sequential writes, so we can properly * account for the metadata space we'll need. */ -static void btrfs_merge_extent_hook(struct inode *inode, +static void btrfs_merge_extent_hook(void *private_data, struct extent_state *new, struct extent_state *other) { + struct inode *inode = private_data; u64 new_size, old_size; u32 num_extents; @@ -1735,9 +1732,10 @@ static void btrfs_del_delalloc_inode(struct btrfs_root *root, * bytes in this file, and to maintain the list of inodes that * have pending delalloc work to be done. */ -static void btrfs_set_bit_hook(struct inode *inode, +static void btrfs_set_bit_hook(void *private_data, struct extent_state *state, unsigned *bits) { + struct inode *inode = private_data; struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); @@ -1789,10 +1787,11 @@ static void btrfs_set_bit_hook(struct inode *inode, /* * extent_io.c clear_bit_hook, see set_bit_hook for why */ -static void btrfs_clear_bit_hook(struct btrfs_inode *inode, +static void btrfs_clear_bit_hook(void *private_data, struct extent_state *state, unsigned *bits) { + struct btrfs_inode *inode = BTRFS_I((struct inode *)private_data); struct btrfs_fs_info *fs_info = btrfs_sb(inode->vfs_inode.i_sb); u64 len = state->end + 1 - state->start; u32 num_extents = count_max_extents(len); @@ -1900,10 +1899,11 @@ int btrfs_merge_bio_hook(struct page *page, unsigned long offset, * At IO completion time the cums attached on the ordered extent record * are inserted into the btree */ -static blk_status_t __btrfs_submit_bio_start(struct inode *inode, - struct bio *bio, int mirror_num, unsigned long bio_flags, - u64 bio_offset) +static blk_status_t __btrfs_submit_bio_start(void *private_data, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset) { + struct inode *inode = private_data; blk_status_t ret = 0; ret = btrfs_csum_one_bio(inode, bio, 0, 0); @@ -1919,10 +1919,11 @@ static blk_status_t __btrfs_submit_bio_start(struct inode *inode, * At IO completion time the cums attached on the ordered extent record * are inserted into the btree */ -static blk_status_t __btrfs_submit_bio_done(struct inode *inode, - struct bio *bio, int mirror_num, unsigned long bio_flags, - u64 bio_offset) +static blk_status_t __btrfs_submit_bio_done(void *private_data, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset) { + struct inode *inode = private_data; struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); blk_status_t ret; @@ -1938,10 +1939,11 @@ static blk_status_t __btrfs_submit_bio_done(struct inode *inode, * extent_io.c submission hook. This does the right thing for csum calculation * on write, or reading the csums from the tree before a read */ -static blk_status_t btrfs_submit_bio_hook(struct inode *inode, struct bio *bio, - int mirror_num, unsigned long bio_flags, - u64 bio_offset) +static blk_status_t btrfs_submit_bio_hook(void *private_data, struct bio *bio, + int mirror_num, unsigned long bio_flags, + u64 bio_offset) { + struct inode *inode = private_data; struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; enum btrfs_wq_endio_type metadata = BTRFS_WQ_ENDIO_DATA; @@ -1975,8 +1977,8 @@ static blk_status_t btrfs_submit_bio_hook(struct inode *inode, struct bio *bio, if (root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID) goto mapit; /* we're doing a write, do the async checksumming */ - ret = btrfs_wq_submit_bio(fs_info, inode, bio, mirror_num, - bio_flags, bio_offset, + ret = btrfs_wq_submit_bio(fs_info, bio, mirror_num, bio_flags, + bio_offset, inode, __btrfs_submit_bio_start, __btrfs_submit_bio_done); goto out; @@ -2034,6 +2036,7 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work) struct btrfs_writepage_fixup *fixup; struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; + struct extent_changeset *data_reserved = NULL; struct page *page; struct inode *inode; u64 page_start; @@ -2071,7 +2074,7 @@ again: goto again; } - ret = btrfs_delalloc_reserve_space(inode, page_start, + ret = btrfs_delalloc_reserve_space(inode, &data_reserved, page_start, PAGE_SIZE); if (ret) { mapping_set_error(page->mapping, ret); @@ -2091,6 +2094,7 @@ out_page: unlock_page(page); put_page(page); kfree(fixup); + extent_changeset_free(data_reserved); } /* @@ -2142,6 +2146,7 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_key ins; + u64 qg_released; int extent_inserted = 0; int ret; @@ -2197,13 +2202,17 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans, ins.objectid = disk_bytenr; ins.offset = disk_num_bytes; ins.type = BTRFS_EXTENT_ITEM_KEY; - ret = btrfs_alloc_reserved_file_extent(trans, root->root_key.objectid, - btrfs_ino(BTRFS_I(inode)), file_pos, ram_bytes, &ins); + /* * Release the reserved range from inode dirty range map, as it is * already moved into delayed_ref_head */ - btrfs_qgroup_release_data(inode, file_pos, ram_bytes); + ret = btrfs_qgroup_release_data(inode, file_pos, ram_bytes); + if (ret < 0) + goto out; + qg_released = ret; + ret = btrfs_alloc_reserved_file_extent(trans, root->root_key.objectid, + btrfs_ino(BTRFS_I(inode)), file_pos, qg_released, &ins); out: btrfs_free_path(path); @@ -2925,7 +2934,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) * space for NOCOW range. * As NOCOW won't cause a new delayed ref, just free the space */ - btrfs_qgroup_free_data(inode, ordered_extent->file_offset, + btrfs_qgroup_free_data(inode, NULL, ordered_extent->file_offset, ordered_extent->len); btrfs_ordered_update_i_size(inode, 0, ordered_extent); if (nolock) @@ -4761,6 +4770,7 @@ int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; + struct extent_changeset *data_reserved = NULL; char *kaddr; u32 blocksize = fs_info->sectorsize; pgoff_t index = from >> PAGE_SHIFT; @@ -4775,7 +4785,7 @@ int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, (!len || ((len & (blocksize - 1)) == 0))) goto out; - ret = btrfs_delalloc_reserve_space(inode, + ret = btrfs_delalloc_reserve_space(inode, &data_reserved, round_down(from, blocksize), blocksize); if (ret) goto out; @@ -4783,7 +4793,7 @@ int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len, again: page = find_or_create_page(mapping, index, mask); if (!page) { - btrfs_delalloc_release_space(inode, + btrfs_delalloc_release_space(inode, data_reserved, round_down(from, blocksize), blocksize); ret = -ENOMEM; @@ -4855,11 +4865,12 @@ again: out_unlock: if (ret) - btrfs_delalloc_release_space(inode, block_start, + btrfs_delalloc_release_space(inode, data_reserved, block_start, blocksize); unlock_page(page); put_page(page); out: + extent_changeset_free(data_reserved); return ret; } @@ -5254,7 +5265,7 @@ static void evict_inode_truncate_pages(struct inode *inode) * Note, end is the bytenr of last byte, so we need + 1 here. */ if (state->state & EXTENT_DELALLOC) - btrfs_qgroup_free_data(inode, start, end - start + 1); + btrfs_qgroup_free_data(inode, NULL, start, end - start + 1); clear_extent_bit(io_tree, start, end, EXTENT_LOCKED | EXTENT_DIRTY | @@ -5867,7 +5878,6 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) struct inode *inode = file_inode(file); struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_root *root = BTRFS_I(inode)->root; - struct btrfs_item *item; struct btrfs_dir_item *di; struct btrfs_key key; struct btrfs_key found_key; @@ -5918,7 +5928,6 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) continue; } - item = btrfs_item_nr(slot); btrfs_item_key_to_cpu(leaf, &found_key, slot); if (found_key.objectid != key.objectid) @@ -5933,7 +5942,7 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) ctx->pos = found_key.offset; di = btrfs_item_ptr(leaf, slot, struct btrfs_dir_item); - if (verify_dir_item(fs_info, leaf, di)) + if (verify_dir_item(fs_info, leaf, slot, di)) goto next; name_len = btrfs_dir_name_len(leaf, di); @@ -7479,7 +7488,7 @@ out: bool btrfs_page_exists_in_range(struct inode *inode, loff_t start, loff_t end) { struct radix_tree_root *root = &inode->i_mapping->page_tree; - int found = false; + bool found = false; void **pagep = NULL; struct page *page = NULL; unsigned long start_idx; @@ -7977,9 +7986,12 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, bio_end_io_t *repair_endio, void *repair_arg) { struct io_failure_record *failrec; + struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; + struct extent_io_tree *failure_tree = &BTRFS_I(inode)->io_failure_tree; struct bio *bio; int isector; int read_mode = 0; + int segs; int ret; BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE); @@ -7991,13 +8003,13 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, ret = btrfs_check_dio_repairable(inode, failed_bio, failrec, failed_mirror); if (!ret) { - free_io_failure(BTRFS_I(inode), failrec); + free_io_failure(failure_tree, io_tree, failrec); return -EIO; } - if ((failed_bio->bi_vcnt > 1) - || (failed_bio->bi_io_vec->bv_len - > btrfs_inode_sectorsize(inode))) + segs = bio_segments(failed_bio); + if (segs > 1 || + (failed_bio->bi_io_vec->bv_len > btrfs_inode_sectorsize(inode))) read_mode |= REQ_FAILFAST_DEV; isector = start - btrfs_io_bio(failed_bio)->logical; @@ -8005,7 +8017,7 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, bio = btrfs_create_repair_bio(inode, failed_bio, failrec, page, pgoff, isector, repair_endio, repair_arg); if (!bio) { - free_io_failure(BTRFS_I(inode), failrec); + free_io_failure(failure_tree, io_tree, failrec); return -EIO; } bio_set_op_attrs(bio, REQ_OP_READ, read_mode); @@ -8016,7 +8028,7 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, ret = submit_dio_repair_bio(inode, bio, failrec->this_mirror); if (ret) { - free_io_failure(BTRFS_I(inode), failrec); + free_io_failure(failure_tree, io_tree, failrec); bio_put(bio); } @@ -8033,19 +8045,24 @@ struct btrfs_retry_complete { static void btrfs_retry_endio_nocsum(struct bio *bio) { struct btrfs_retry_complete *done = bio->bi_private; + struct inode *inode = done->inode; struct bio_vec *bvec; + struct extent_io_tree *io_tree, *failure_tree; int i; if (bio->bi_status) goto end; ASSERT(bio->bi_vcnt == 1); - ASSERT(bio->bi_io_vec->bv_len == btrfs_inode_sectorsize(done->inode)); + io_tree = &BTRFS_I(inode)->io_tree; + failure_tree = &BTRFS_I(inode)->io_failure_tree; + ASSERT(bio->bi_io_vec->bv_len == btrfs_inode_sectorsize(inode)); done->uptodate = 1; bio_for_each_segment_all(bvec, bio, i) - clean_io_failure(BTRFS_I(done->inode), done->start, - bvec->bv_page, 0); + clean_io_failure(BTRFS_I(inode)->root->fs_info, failure_tree, + io_tree, done->start, bvec->bv_page, + btrfs_ino(BTRFS_I(inode)), 0); end: complete(&done->done); bio_put(bio); @@ -8055,36 +8072,40 @@ static int __btrfs_correct_data_nocsum(struct inode *inode, struct btrfs_io_bio *io_bio) { struct btrfs_fs_info *fs_info; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; struct btrfs_retry_complete done; u64 start; unsigned int pgoff; u32 sectorsize; int nr_sectors; - int i; int ret; + int err = 0; fs_info = BTRFS_I(inode)->root->fs_info; sectorsize = fs_info->sectorsize; start = io_bio->logical; done.inode = inode; + io_bio->bio.bi_iter = io_bio->iter; - bio_for_each_segment_all(bvec, &io_bio->bio, i) { - nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, bvec->bv_len); - pgoff = bvec->bv_offset; + bio_for_each_segment(bvec, &io_bio->bio, iter) { + nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, bvec.bv_len); + pgoff = bvec.bv_offset; next_block_or_try_again: done.uptodate = 0; done.start = start; init_completion(&done.done); - ret = dio_read_error(inode, &io_bio->bio, bvec->bv_page, + ret = dio_read_error(inode, &io_bio->bio, bvec.bv_page, pgoff, start, start + sectorsize - 1, io_bio->mirror_num, btrfs_retry_endio_nocsum, &done); - if (ret) - return ret; + if (ret) { + err = ret; + goto next; + } wait_for_completion(&done.done); @@ -8093,6 +8114,7 @@ next_block_or_try_again: goto next_block_or_try_again; } +next: start += sectorsize; nr_sectors--; @@ -8103,13 +8125,15 @@ next_block_or_try_again: } } - return 0; + return err; } static void btrfs_retry_endio(struct bio *bio) { struct btrfs_retry_complete *done = bio->bi_private; struct btrfs_io_bio *io_bio = btrfs_io_bio(bio); + struct extent_io_tree *io_tree, *failure_tree; + struct inode *inode = done->inode; struct bio_vec *bvec; int uptodate; int ret; @@ -8123,13 +8147,19 @@ static void btrfs_retry_endio(struct bio *bio) ASSERT(bio->bi_vcnt == 1); ASSERT(bio->bi_io_vec->bv_len == btrfs_inode_sectorsize(done->inode)); + io_tree = &BTRFS_I(inode)->io_tree; + failure_tree = &BTRFS_I(inode)->io_failure_tree; + bio_for_each_segment_all(bvec, bio, i) { - ret = __readpage_endio_check(done->inode, io_bio, i, - bvec->bv_page, bvec->bv_offset, - done->start, bvec->bv_len); + ret = __readpage_endio_check(inode, io_bio, i, bvec->bv_page, + bvec->bv_offset, done->start, + bvec->bv_len); if (!ret) - clean_io_failure(BTRFS_I(done->inode), done->start, - bvec->bv_page, bvec->bv_offset); + clean_io_failure(BTRFS_I(inode)->root->fs_info, + failure_tree, io_tree, done->start, + bvec->bv_page, + btrfs_ino(BTRFS_I(inode)), + bvec->bv_offset); else uptodate = 0; } @@ -8144,7 +8174,8 @@ static blk_status_t __btrfs_subio_endio_read(struct inode *inode, struct btrfs_io_bio *io_bio, blk_status_t err) { struct btrfs_fs_info *fs_info; - struct bio_vec *bvec; + struct bio_vec bvec; + struct bvec_iter iter; struct btrfs_retry_complete done; u64 start; u64 offset = 0; @@ -8152,7 +8183,7 @@ static blk_status_t __btrfs_subio_endio_read(struct inode *inode, int nr_sectors; unsigned int pgoff; int csum_pos; - int i; + bool uptodate = (err == 0); int ret; fs_info = BTRFS_I(inode)->root->fs_info; @@ -8161,24 +8192,26 @@ static blk_status_t __btrfs_subio_endio_read(struct inode *inode, err = 0; start = io_bio->logical; done.inode = inode; + io_bio->bio.bi_iter = io_bio->iter; - bio_for_each_segment_all(bvec, &io_bio->bio, i) { - nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, bvec->bv_len); + bio_for_each_segment(bvec, &io_bio->bio, iter) { + nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, bvec.bv_len); - pgoff = bvec->bv_offset; + pgoff = bvec.bv_offset; next_block: - csum_pos = BTRFS_BYTES_TO_BLKS(fs_info, offset); - ret = __readpage_endio_check(inode, io_bio, csum_pos, - bvec->bv_page, pgoff, start, - sectorsize); - if (likely(!ret)) - goto next; + if (uptodate) { + csum_pos = BTRFS_BYTES_TO_BLKS(fs_info, offset); + ret = __readpage_endio_check(inode, io_bio, csum_pos, + bvec.bv_page, pgoff, start, sectorsize); + if (likely(!ret)) + goto next; + } try_again: done.uptodate = 0; done.start = start; init_completion(&done.done); - ret = dio_read_error(inode, &io_bio->bio, bvec->bv_page, + ret = dio_read_error(inode, &io_bio->bio, bvec.bv_page, pgoff, start, start + sectorsize - 1, io_bio->mirror_num, btrfs_retry_endio, &done); @@ -8233,8 +8266,11 @@ static void btrfs_endio_direct_read(struct bio *bio) struct btrfs_io_bio *io_bio = btrfs_io_bio(bio); blk_status_t err = bio->bi_status; - if (dip->flags & BTRFS_DIO_ORIG_BIO_SUBMITTED) + if (dip->flags & BTRFS_DIO_ORIG_BIO_SUBMITTED) { err = btrfs_subio_endio_read(inode, io_bio, err); + if (!err) + bio->bi_status = 0; + } unlock_extent(&BTRFS_I(inode)->io_tree, dip->logical_offset, dip->logical_offset + dip->bytes - 1); @@ -8307,10 +8343,11 @@ static void btrfs_endio_direct_write(struct bio *bio) bio_put(bio); } -static blk_status_t __btrfs_submit_bio_start_direct_io(struct inode *inode, +static blk_status_t __btrfs_submit_bio_start_direct_io(void *private_data, struct bio *bio, int mirror_num, unsigned long bio_flags, u64 offset) { + struct inode *inode = private_data; blk_status_t ret; ret = btrfs_csum_one_bio(inode, bio, offset, 1); BUG_ON(ret); /* -ENOMEM */ @@ -8357,16 +8394,6 @@ out: bio_put(bio); } -static struct bio *btrfs_dio_bio_alloc(struct block_device *bdev, - u64 first_sector, gfp_t gfp_flags) -{ - struct bio *bio; - bio = btrfs_bio_alloc(bdev, first_sector, BIO_MAX_PAGES, gfp_flags); - if (bio) - bio_associate_current(bio); - return bio; -} - static inline blk_status_t btrfs_lookup_and_bind_dio_csum(struct inode *inode, struct btrfs_dio_private *dip, struct bio *bio, @@ -8422,8 +8449,8 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, goto map; if (write && async_submit) { - ret = btrfs_wq_submit_bio(fs_info, inode, bio, 0, 0, - file_offset, + ret = btrfs_wq_submit_bio(fs_info, bio, 0, 0, + file_offset, inode, __btrfs_submit_bio_start_direct_io, __btrfs_submit_bio_done); goto err; @@ -8453,103 +8480,83 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip, { struct inode *inode = dip->inode; struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); - struct btrfs_root *root = BTRFS_I(inode)->root; struct bio *bio; struct bio *orig_bio = dip->orig_bio; - struct bio_vec *bvec; u64 start_sector = orig_bio->bi_iter.bi_sector; u64 file_offset = dip->logical_offset; - u64 submit_len = 0; u64 map_length; - u32 blocksize = fs_info->sectorsize; int async_submit = 0; - int nr_sectors; + u64 submit_len; + int clone_offset = 0; + int clone_len; int ret; - int i, j; map_length = orig_bio->bi_iter.bi_size; + submit_len = map_length; ret = btrfs_map_block(fs_info, btrfs_op(orig_bio), start_sector << 9, &map_length, NULL, 0); if (ret) return -EIO; - if (map_length >= orig_bio->bi_iter.bi_size) { + if (map_length >= submit_len) { bio = orig_bio; dip->flags |= BTRFS_DIO_ORIG_BIO_SUBMITTED; goto submit; } /* async crcs make it difficult to collect full stripe writes. */ - if (btrfs_get_alloc_profile(root, 1) & BTRFS_BLOCK_GROUP_RAID56_MASK) + if (btrfs_data_alloc_profile(fs_info) & BTRFS_BLOCK_GROUP_RAID56_MASK) async_submit = 0; else async_submit = 1; - bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS); - if (!bio) - return -ENOMEM; - - bio->bi_opf = orig_bio->bi_opf; - bio->bi_private = dip; - bio->bi_end_io = btrfs_end_dio_bio; - btrfs_io_bio(bio)->logical = file_offset; + /* bio split */ + ASSERT(map_length <= INT_MAX); atomic_inc(&dip->pending_bios); + do { + clone_len = min_t(int, submit_len, map_length); - bio_for_each_segment_all(bvec, orig_bio, j) { - nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, bvec->bv_len); - i = 0; -next_block: - if (unlikely(map_length < submit_len + blocksize || - bio_add_page(bio, bvec->bv_page, blocksize, - bvec->bv_offset + (i * blocksize)) < blocksize)) { - /* - * inc the count before we submit the bio so - * we know the end IO handler won't happen before - * we inc the count. Otherwise, the dip might get freed - * before we're done setting it up - */ - atomic_inc(&dip->pending_bios); - ret = __btrfs_submit_dio_bio(bio, inode, - file_offset, skip_sum, - async_submit); - if (ret) { - bio_put(bio); - atomic_dec(&dip->pending_bios); - goto out_err; - } - - start_sector += submit_len >> 9; - file_offset += submit_len; + /* + * This will never fail as it's passing GPF_NOFS and + * the allocation is backed by btrfs_bioset. + */ + bio = btrfs_bio_clone_partial(orig_bio, clone_offset, + clone_len); + bio->bi_private = dip; + bio->bi_end_io = btrfs_end_dio_bio; + btrfs_io_bio(bio)->logical = file_offset; + + ASSERT(submit_len >= clone_len); + submit_len -= clone_len; + if (submit_len == 0) + break; - submit_len = 0; + /* + * Increase the count before we submit the bio so we know + * the end IO handler won't happen before we increase the + * count. Otherwise, the dip might get freed before we're + * done setting it up. + */ + atomic_inc(&dip->pending_bios); - bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, - start_sector, GFP_NOFS); - if (!bio) - goto out_err; - bio->bi_opf = orig_bio->bi_opf; - bio->bi_private = dip; - bio->bi_end_io = btrfs_end_dio_bio; - btrfs_io_bio(bio)->logical = file_offset; + ret = __btrfs_submit_dio_bio(bio, inode, file_offset, skip_sum, + async_submit); + if (ret) { + bio_put(bio); + atomic_dec(&dip->pending_bios); + goto out_err; + } - map_length = orig_bio->bi_iter.bi_size; - ret = btrfs_map_block(fs_info, btrfs_op(orig_bio), - start_sector << 9, - &map_length, NULL, 0); - if (ret) { - bio_put(bio); - goto out_err; - } + clone_offset += clone_len; + start_sector += clone_len >> 9; + file_offset += clone_len; - goto next_block; - } else { - submit_len += blocksize; - if (--nr_sectors) { - i++; - goto next_block; - } - } - } + map_length = submit_len; + ret = btrfs_map_block(fs_info, btrfs_op(orig_bio), + start_sector << 9, &map_length, NULL, 0); + if (ret) + goto out_err; + } while (submit_len > 0); submit: ret = __btrfs_submit_dio_bio(bio, inode, file_offset, skip_sum, @@ -8576,19 +8583,15 @@ static void btrfs_submit_direct(struct bio *dio_bio, struct inode *inode, loff_t file_offset) { struct btrfs_dio_private *dip = NULL; - struct bio *io_bio = NULL; - struct btrfs_io_bio *btrfs_bio; + struct bio *bio = NULL; + struct btrfs_io_bio *io_bio; int skip_sum; bool write = (bio_op(dio_bio) == REQ_OP_WRITE); int ret = 0; skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM; - io_bio = btrfs_bio_clone(dio_bio, GFP_NOFS); - if (!io_bio) { - ret = -ENOMEM; - goto free_ordered; - } + bio = btrfs_bio_clone(dio_bio); dip = kzalloc(sizeof(*dip), GFP_NOFS); if (!dip) { @@ -8601,17 +8604,17 @@ static void btrfs_submit_direct(struct bio *dio_bio, struct inode *inode, dip->logical_offset = file_offset; dip->bytes = dio_bio->bi_iter.bi_size; dip->disk_bytenr = (u64)dio_bio->bi_iter.bi_sector << 9; - io_bio->bi_private = dip; - dip->orig_bio = io_bio; + bio->bi_private = dip; + dip->orig_bio = bio; dip->dio_bio = dio_bio; atomic_set(&dip->pending_bios, 0); - btrfs_bio = btrfs_io_bio(io_bio); - btrfs_bio->logical = file_offset; + io_bio = btrfs_io_bio(bio); + io_bio->logical = file_offset; if (write) { - io_bio->bi_end_io = btrfs_endio_direct_write; + bio->bi_end_io = btrfs_endio_direct_write; } else { - io_bio->bi_end_io = btrfs_endio_direct_read; + bio->bi_end_io = btrfs_endio_direct_read; dip->subio_endio = btrfs_subio_endio_read; } @@ -8634,8 +8637,8 @@ static void btrfs_submit_direct(struct bio *dio_bio, struct inode *inode, if (!ret) return; - if (btrfs_bio->end_io) - btrfs_bio->end_io(btrfs_bio, ret); + if (io_bio->end_io) + io_bio->end_io(io_bio, ret); free_ordered: /* @@ -8647,16 +8650,15 @@ free_ordered: * same as btrfs_endio_direct_[write|read] because we can't call these * callbacks - they require an allocated dip and a clone of dio_bio. */ - if (io_bio && dip) { - io_bio->bi_status = BLK_STS_IOERR; - bio_endio(io_bio); + if (bio && dip) { + bio_io_error(bio); /* - * The end io callbacks free our dip, do the final put on io_bio + * The end io callbacks free our dip, do the final put on bio * and all the cleanup and final put for dio_bio (through * dio_end_io()). */ dip = NULL; - io_bio = NULL; + bio = NULL; } else { if (write) __endio_write_update_ordered(inode, @@ -8674,8 +8676,8 @@ free_ordered: */ dio_end_io(dio_bio); } - if (io_bio) - bio_put(io_bio); + if (bio) + bio_put(bio); kfree(dip); } @@ -8719,6 +8721,7 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) struct inode *inode = file->f_mapping->host; struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_dio_data dio_data = { 0 }; + struct extent_changeset *data_reserved = NULL; loff_t offset = iocb->ki_pos; size_t count = 0; int flags = 0; @@ -8758,7 +8761,8 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) ret = -EAGAIN; goto out; } - ret = btrfs_delalloc_reserve_space(inode, offset, count); + ret = btrfs_delalloc_reserve_space(inode, &data_reserved, + offset, count); if (ret) goto out; dio_data.outstanding_extents = count_max_extents(count); @@ -8790,8 +8794,8 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) current->journal_info = NULL; if (ret < 0 && ret != -EIOCBQUEUED) { if (dio_data.reserve) - btrfs_delalloc_release_space(inode, offset, - dio_data.reserve); + btrfs_delalloc_release_space(inode, data_reserved, + offset, dio_data.reserve); /* * On error we might have left some ordered extents * without submitting corresponding bios for them, so @@ -8806,8 +8810,8 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) dio_data.unsubmitted_oe_range_start, false); } else if (ret >= 0 && (size_t)ret < count) - btrfs_delalloc_release_space(inode, offset, - count - (size_t)ret); + btrfs_delalloc_release_space(inode, data_reserved, + offset, count - (size_t)ret); } out: if (wakeup) @@ -8815,6 +8819,7 @@ out: if (relock) inode_lock(inode); + extent_changeset_free(data_reserved); return ret; } @@ -9005,7 +9010,7 @@ again: * free the entire extent. */ if (PageDirty(page)) - btrfs_qgroup_free_data(inode, page_start, PAGE_SIZE); + btrfs_qgroup_free_data(inode, NULL, page_start, PAGE_SIZE); if (!inode_evicting) { clear_extent_bit(tree, page_start, page_end, EXTENT_LOCKED | EXTENT_DIRTY | @@ -9047,6 +9052,7 @@ int btrfs_page_mkwrite(struct vm_fault *vmf) struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; + struct extent_changeset *data_reserved = NULL; char *kaddr; unsigned long zero_start; loff_t size; @@ -9072,7 +9078,7 @@ int btrfs_page_mkwrite(struct vm_fault *vmf) * end up waiting indefinitely to get a lock on the page currently * being processed by btrfs_page_mkwrite() function. */ - ret = btrfs_delalloc_reserve_space(inode, page_start, + ret = btrfs_delalloc_reserve_space(inode, &data_reserved, page_start, reserved_space); if (!ret) { ret = file_update_time(vmf->vma->vm_file); @@ -9126,8 +9132,8 @@ again: spin_lock(&BTRFS_I(inode)->lock); BTRFS_I(inode)->outstanding_extents++; spin_unlock(&BTRFS_I(inode)->lock); - btrfs_delalloc_release_space(inode, page_start, - PAGE_SIZE - reserved_space); + btrfs_delalloc_release_space(inode, data_reserved, + page_start, PAGE_SIZE - reserved_space); } } @@ -9178,13 +9184,16 @@ again: out_unlock: if (!ret) { sb_end_pagefault(inode->i_sb); + extent_changeset_free(data_reserved); return VM_FAULT_LOCKED; } unlock_page(page); out: - btrfs_delalloc_release_space(inode, page_start, reserved_space); + btrfs_delalloc_release_space(inode, data_reserved, page_start, + reserved_space); out_noreserve: sb_end_pagefault(inode->i_sb); + extent_changeset_free(data_reserved); return ret; } @@ -9406,8 +9415,8 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) inode = &ei->vfs_inode; extent_map_tree_init(&ei->extent_tree); - extent_io_tree_init(&ei->io_tree, &inode->i_data); - extent_io_tree_init(&ei->io_failure_tree, &inode->i_data); + extent_io_tree_init(&ei->io_tree, inode); + extent_io_tree_init(&ei->io_failure_tree, inode); ei->io_tree.track_uptodate = 1; ei->io_failure_tree.track_uptodate = 1; atomic_set(&ei->sync_writers, 0); @@ -9516,7 +9525,6 @@ void btrfs_destroy_cachep(void) rcu_barrier(); kmem_cache_destroy(btrfs_inode_cachep); kmem_cache_destroy(btrfs_trans_handle_cachep); - kmem_cache_destroy(btrfs_transaction_cachep); kmem_cache_destroy(btrfs_path_cachep); kmem_cache_destroy(btrfs_free_space_cachep); } @@ -9536,12 +9544,6 @@ int btrfs_init_cachep(void) if (!btrfs_trans_handle_cachep) goto fail; - btrfs_transaction_cachep = kmem_cache_create("btrfs_transaction", - sizeof(struct btrfs_transaction), 0, - SLAB_TEMPORARY | SLAB_MEM_SPREAD, NULL); - if (!btrfs_transaction_cachep) - goto fail; - btrfs_path_cachep = kmem_cache_create("btrfs_path", sizeof(struct btrfs_path), 0, SLAB_MEM_SPREAD, NULL); @@ -9566,6 +9568,24 @@ static int btrfs_getattr(const struct path *path, struct kstat *stat, u64 delalloc_bytes; struct inode *inode = d_inode(path->dentry); u32 blocksize = inode->i_sb->s_blocksize; + u32 bi_flags = BTRFS_I(inode)->flags; + + stat->result_mask |= STATX_BTIME; + stat->btime.tv_sec = BTRFS_I(inode)->i_otime.tv_sec; + stat->btime.tv_nsec = BTRFS_I(inode)->i_otime.tv_nsec; + if (bi_flags & BTRFS_INODE_APPEND) + stat->attributes |= STATX_ATTR_APPEND; + if (bi_flags & BTRFS_INODE_COMPRESS) + stat->attributes |= STATX_ATTR_COMPRESSED; + if (bi_flags & BTRFS_INODE_IMMUTABLE) + stat->attributes |= STATX_ATTR_IMMUTABLE; + if (bi_flags & BTRFS_INODE_NODUMP) + stat->attributes |= STATX_ATTR_NODUMP; + + stat->attributes_mask |= (STATX_ATTR_APPEND | + STATX_ATTR_COMPRESSED | + STATX_ATTR_IMMUTABLE | + STATX_ATTR_NODUMP); generic_fillattr(inode, stat); stat->dev = BTRFS_I(inode)->root->anon_dev; @@ -10540,7 +10560,7 @@ next: btrfs_end_transaction(trans); } if (cur_offset < end) - btrfs_free_reserved_data_space(inode, cur_offset, + btrfs_free_reserved_data_space(inode, NULL, cur_offset, end - cur_offset + 1); return ret; } @@ -10661,6 +10681,42 @@ static int btrfs_readpage_io_failed_hook(struct page *page, int failed_mirror) return -EAGAIN; } +static struct btrfs_fs_info *iotree_fs_info(void *private_data) +{ + struct inode *inode = private_data; + return btrfs_sb(inode->i_sb); +} + +static void btrfs_check_extent_io_range(void *private_data, const char *caller, + u64 start, u64 end) +{ + struct inode *inode = private_data; + u64 isize; + + isize = i_size_read(inode); + if (end >= PAGE_SIZE && (end % 2) == 0 && end != isize - 1) { + btrfs_debug_rl(BTRFS_I(inode)->root->fs_info, + "%s: ino %llu isize %llu odd range [%llu,%llu]", + caller, btrfs_ino(BTRFS_I(inode)), isize, start, end); + } +} + +void btrfs_set_range_writeback(void *private_data, u64 start, u64 end) +{ + struct inode *inode = private_data; + unsigned long index = start >> PAGE_SHIFT; + unsigned long end_index = end >> PAGE_SHIFT; + struct page *page; + + while (index <= end_index) { + page = find_get_page(inode->i_mapping, index); + ASSERT(page); /* Pages should be in the extent_io_tree */ + set_page_writeback(page); + put_page(page); + index++; + } +} + static const struct inode_operations btrfs_dir_inode_operations = { .getattr = btrfs_getattr, .lookup = btrfs_lookup, @@ -10704,6 +10760,8 @@ static const struct extent_io_ops btrfs_extent_io_ops = { .readpage_end_io_hook = btrfs_readpage_end_io_hook, .merge_bio_hook = btrfs_merge_bio_hook, .readpage_io_failed_hook = btrfs_readpage_io_failed_hook, + .tree_fs_info = iotree_fs_info, + .set_range_writeback = btrfs_set_range_writeback, /* optional callbacks */ .fill_delalloc = run_delalloc_range, @@ -10713,6 +10771,7 @@ static const struct extent_io_ops btrfs_extent_io_ops = { .clear_bit_hook = btrfs_clear_bit_hook, .merge_extent_hook = btrfs_merge_extent_hook, .split_extent_hook = btrfs_split_extent_hook, + .check_extent_io_range = btrfs_check_extent_io_range, }; /* diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index e176375f374f..fa1b78cf25f6 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -37,7 +37,7 @@ #include <linux/bit_spinlock.h> #include <linux/security.h> #include <linux/xattr.h> -#include <linux/vmalloc.h> +#include <linux/mm.h> #include <linux/slab.h> #include <linux/blkdev.h> #include <linux/uuid.h> @@ -689,7 +689,7 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, if (ret) goto dec_and_free; - btrfs_wait_ordered_extents(root, -1, 0, (u64)-1); + btrfs_wait_ordered_extents(root, U64_MAX, 0, (u64)-1); btrfs_init_block_rsv(&pending_snapshot->block_rsv, BTRFS_BLOCK_RSV_TEMP); @@ -1127,6 +1127,7 @@ static int cluster_pages_for_defrag(struct inode *inode, struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; struct extent_io_tree *tree; + struct extent_changeset *data_reserved = NULL; gfp_t mask = btrfs_alloc_write_mask(inode->i_mapping); file_end = (isize - 1) >> PAGE_SHIFT; @@ -1135,7 +1136,7 @@ static int cluster_pages_for_defrag(struct inode *inode, page_cnt = min_t(u64, (u64)num_pages, (u64)file_end - start_index + 1); - ret = btrfs_delalloc_reserve_space(inode, + ret = btrfs_delalloc_reserve_space(inode, &data_reserved, start_index << PAGE_SHIFT, page_cnt << PAGE_SHIFT); if (ret) @@ -1226,7 +1227,7 @@ again: spin_lock(&BTRFS_I(inode)->lock); BTRFS_I(inode)->outstanding_extents++; spin_unlock(&BTRFS_I(inode)->lock); - btrfs_delalloc_release_space(inode, + btrfs_delalloc_release_space(inode, data_reserved, start_index << PAGE_SHIFT, (page_cnt - i_done) << PAGE_SHIFT); } @@ -1247,15 +1248,17 @@ again: unlock_page(pages[i]); put_page(pages[i]); } + extent_changeset_free(data_reserved); return i_done; out: for (i = 0; i < i_done; i++) { unlock_page(pages[i]); put_page(pages[i]); } - btrfs_delalloc_release_space(inode, + btrfs_delalloc_release_space(inode, data_reserved, start_index << PAGE_SHIFT, page_cnt << PAGE_SHIFT); + extent_changeset_free(data_reserved); return ret; } @@ -4588,7 +4591,7 @@ static long btrfs_ioctl_logical_to_ino(struct btrfs_fs_info *fs_info, out: btrfs_free_path(path); - vfree(inodes); + kvfree(inodes); kfree(loi); return ret; @@ -4897,7 +4900,6 @@ static long btrfs_ioctl_qgroup_assign(struct file *file, void __user *arg) goto out; } - /* FIXME: check if the IDs really exist */ if (sa->assign) { ret = btrfs_add_qgroup_relation(trans, fs_info, sa->src, sa->dst); @@ -4956,7 +4958,6 @@ static long btrfs_ioctl_qgroup_create(struct file *file, void __user *arg) goto out; } - /* FIXME: check if the IDs really exist */ if (sa->create) { ret = btrfs_create_qgroup(trans, fs_info, sa->qgroupid); } else { @@ -5010,7 +5011,6 @@ static long btrfs_ioctl_qgroup_limit(struct file *file, void __user *arg) qgroupid = root->root_key.objectid; } - /* FIXME: check if the IDs really exist */ ret = btrfs_limit_qgroup(trans, fs_info, qgroupid, &sa->lim); err = btrfs_end_transaction(trans); diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c index f48c8c14dc14..d433e75d489a 100644 --- a/fs/btrfs/lzo.c +++ b/fs/btrfs/lzo.c @@ -18,13 +18,14 @@ #include <linux/kernel.h> #include <linux/slab.h> -#include <linux/vmalloc.h> +#include <linux/mm.h> #include <linux/init.h> #include <linux/err.h> #include <linux/sched.h> #include <linux/pagemap.h> #include <linux/bio.h> #include <linux/lzo.h> +#include <linux/refcount.h> #include "compression.h" #define LZO_LEN 4 @@ -40,9 +41,9 @@ static void lzo_free_workspace(struct list_head *ws) { struct workspace *workspace = list_entry(ws, struct workspace, list); - vfree(workspace->buf); - vfree(workspace->cbuf); - vfree(workspace->mem); + kvfree(workspace->buf); + kvfree(workspace->cbuf); + kvfree(workspace->mem); kfree(workspace); } @@ -50,13 +51,13 @@ static struct list_head *lzo_alloc_workspace(void) { struct workspace *workspace; - workspace = kzalloc(sizeof(*workspace), GFP_NOFS); + workspace = kzalloc(sizeof(*workspace), GFP_KERNEL); if (!workspace) return ERR_PTR(-ENOMEM); - workspace->mem = vmalloc(LZO1X_MEM_COMPRESS); - workspace->buf = vmalloc(lzo1x_worst_compress(PAGE_SIZE)); - workspace->cbuf = vmalloc(lzo1x_worst_compress(PAGE_SIZE)); + workspace->mem = kvmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL); + workspace->buf = kvmalloc(lzo1x_worst_compress(PAGE_SIZE), GFP_KERNEL); + workspace->cbuf = kvmalloc(lzo1x_worst_compress(PAGE_SIZE), GFP_KERNEL); if (!workspace->mem || !workspace->buf || !workspace->cbuf) goto fail; @@ -141,7 +142,7 @@ static int lzo_compress_pages(struct list_head *ws, ret = lzo1x_1_compress(data_in, in_len, workspace->cbuf, &out_len, workspace->mem); if (ret != LZO_E_OK) { - pr_debug("BTRFS: deflate in loop returned %d\n", + pr_debug("BTRFS: lzo in loop returned %d\n", ret); ret = -EIO; goto out; @@ -229,8 +230,10 @@ static int lzo_compress_pages(struct list_head *ws, in_len = min(bytes_left, PAGE_SIZE); } - if (tot_out > tot_in) + if (tot_out >= tot_in) { + ret = -E2BIG; goto out; + } /* store the size of all chunks of compressed data */ cpage_out = kmap(pages[0]); @@ -254,16 +257,13 @@ out: return ret; } -static int lzo_decompress_bio(struct list_head *ws, - struct page **pages_in, - u64 disk_start, - struct bio *orig_bio, - size_t srclen) +static int lzo_decompress_bio(struct list_head *ws, struct compressed_bio *cb) { struct workspace *workspace = list_entry(ws, struct workspace, list); int ret = 0, ret2; char *data_in; unsigned long page_in_index = 0; + size_t srclen = cb->compressed_len; unsigned long total_pages_in = DIV_ROUND_UP(srclen, PAGE_SIZE); unsigned long buf_start; unsigned long buf_offset = 0; @@ -278,6 +278,9 @@ static int lzo_decompress_bio(struct list_head *ws, unsigned long tot_len; char *buf; bool may_late_unmap, need_unmap; + struct page **pages_in = cb->compressed_pages; + u64 disk_start = cb->start; + struct bio *orig_bio = cb->orig_bio; data_in = kmap(pages_in[0]); tot_len = read_compress_length(data_in); diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 7b40e2e7292a..a3aca495e33e 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -663,7 +663,7 @@ static void btrfs_run_ordered_extent_work(struct btrfs_work *work) * wait for all the ordered extents in a root. This is done when balancing * space between drives. */ -int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr, +u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr, const u64 range_start, const u64 range_len) { struct btrfs_fs_info *fs_info = root->fs_info; @@ -671,7 +671,7 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr, LIST_HEAD(skipped); LIST_HEAD(works); struct btrfs_ordered_extent *ordered, *next; - int count = 0; + u64 count = 0; const u64 range_end = range_start + range_len; mutex_lock(&root->ordered_extent_mutex); @@ -701,7 +701,7 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr, cond_resched(); spin_lock(&root->ordered_extent_lock); - if (nr != -1) + if (nr != U64_MAX) nr--; count++; } @@ -720,13 +720,13 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr, return count; } -int btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, int nr, - const u64 range_start, const u64 range_len) +u64 btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr, + const u64 range_start, const u64 range_len) { struct btrfs_root *root; struct list_head splice; - int done; - int total_done = 0; + u64 total_done = 0; + u64 done; INIT_LIST_HEAD(&splice); @@ -748,9 +748,8 @@ int btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, int nr, total_done += done; spin_lock(&fs_info->ordered_root_lock); - if (nr != -1) { + if (nr != U64_MAX) { nr -= done; - WARN_ON(nr < 0); } } list_splice_tail(&splice, &fs_info->ordered_roots); diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index e0c1d5b8d859..56c4c0ee6381 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -200,9 +200,9 @@ int btrfs_ordered_update_i_size(struct inode *inode, u64 offset, struct btrfs_ordered_extent *ordered); int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, u32 *sum, int len); -int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr, +u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr, const u64 range_start, const u64 range_len); -int btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, int nr, +u64 btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr, const u64 range_start, const u64 range_len); void btrfs_get_logged_extents(struct btrfs_inode *inode, struct list_head *logged_list, diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index cdafbf92ef0c..fcae61e175f3 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -261,8 +261,11 @@ void btrfs_print_leaf(struct btrfs_fs_info *fs_info, struct extent_buffer *l) case BTRFS_BLOCK_GROUP_ITEM_KEY: bi = btrfs_item_ptr(l, i, struct btrfs_block_group_item); - pr_info("\t\tblock group used %llu\n", - btrfs_disk_block_group_used(l, bi)); + pr_info( + "\t\tblock group used %llu chunk_objectid %llu flags %llu\n", + btrfs_disk_block_group_used(l, bi), + btrfs_disk_block_group_chunk_objectid(l, bi), + btrfs_disk_block_group_flags(l, bi)); break; case BTRFS_CHUNK_ITEM_KEY: print_chunk(l, btrfs_item_ptr(l, i, diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c index d6cb155ef7a1..4b23ae5d0e5c 100644 --- a/fs/btrfs/props.c +++ b/fs/btrfs/props.c @@ -164,6 +164,7 @@ static int iterate_object_props(struct btrfs_root *root, size_t), void *ctx) { + struct btrfs_fs_info *fs_info = root->fs_info; int ret; char *name_buf = NULL; char *value_buf = NULL; @@ -214,6 +215,12 @@ static int iterate_object_props(struct btrfs_root *root, name_ptr = (unsigned long)(di + 1); data_ptr = name_ptr + name_len; + if (verify_dir_item(fs_info, leaf, + path->slots[0], di)) { + ret = -EIO; + goto out; + } + if (name_len <= XATTR_BTRFS_PREFIX_LEN || memcmp_extent_buffer(leaf, XATTR_BTRFS_PREFIX, name_ptr, diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index deffbeb74a0b..4ce351efe281 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1406,38 +1406,6 @@ out: return ret; } -int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans, - struct btrfs_fs_info *fs_info) -{ - struct btrfs_qgroup_extent_record *record; - struct btrfs_delayed_ref_root *delayed_refs; - struct rb_node *node; - u64 qgroup_to_skip; - int ret = 0; - - delayed_refs = &trans->transaction->delayed_refs; - qgroup_to_skip = delayed_refs->qgroup_to_skip; - - /* - * No need to do lock, since this function will only be called in - * btrfs_commit_transaction(). - */ - node = rb_first(&delayed_refs->dirty_extent_root); - while (node) { - record = rb_entry(node, struct btrfs_qgroup_extent_record, - node); - if (WARN_ON(!record->old_roots)) - ret = btrfs_find_all_roots(NULL, fs_info, - record->bytenr, 0, &record->old_roots); - if (ret < 0) - break; - if (qgroup_to_skip) - ulist_del(record->old_roots, qgroup_to_skip, 0); - node = rb_next(node); - } - return ret; -} - int btrfs_qgroup_trace_extent_nolock(struct btrfs_fs_info *fs_info, struct btrfs_delayed_ref_root *delayed_refs, struct btrfs_qgroup_extent_record *record) @@ -1559,6 +1527,7 @@ int btrfs_qgroup_trace_leaf_items(struct btrfs_trans_handle *trans, if (ret) return ret; } + cond_resched(); return 0; } @@ -1918,6 +1887,35 @@ static int qgroup_update_counters(struct btrfs_fs_info *fs_info, return 0; } +/* + * Check if the @roots potentially is a list of fs tree roots + * + * Return 0 for definitely not a fs/subvol tree roots ulist + * Return 1 for possible fs/subvol tree roots in the list (considering an empty + * one as well) + */ +static int maybe_fs_roots(struct ulist *roots) +{ + struct ulist_node *unode; + struct ulist_iterator uiter; + + /* Empty one, still possible for fs roots */ + if (!roots || roots->nnodes == 0) + return 1; + + ULIST_ITER_INIT(&uiter); + unode = ulist_next(roots, &uiter); + if (!unode) + return 1; + + /* + * If it contains fs tree roots, then it must belong to fs/subvol + * trees. + * If it contains a non-fs tree, it won't be shared with fs/subvol trees. + */ + return is_fstree(unode->val); +} + int btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info, @@ -1934,10 +1932,20 @@ btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) return 0; - if (new_roots) + if (new_roots) { + if (!maybe_fs_roots(new_roots)) + goto out_free; nr_new_roots = new_roots->nnodes; - if (old_roots) + } + if (old_roots) { + if (!maybe_fs_roots(old_roots)) + goto out_free; nr_old_roots = old_roots->nnodes; + } + + /* Quick exit, either not fs tree roots, or won't affect any qgroup */ + if (nr_old_roots == 0 && nr_new_roots == 0) + goto out_free; BUG_ON(!fs_info->quota_root); @@ -2017,6 +2025,19 @@ int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans, if (!ret) { /* + * Old roots should be searched when inserting qgroup + * extent record + */ + if (WARN_ON(!record->old_roots)) { + /* Search commit root to find old_roots */ + ret = btrfs_find_all_roots(NULL, fs_info, + record->bytenr, 0, + &record->old_roots); + if (ret < 0) + goto cleanup; + } + + /* * Use SEQ_LAST as time_seq to do special search, which * doesn't lock tree or delayed_refs and search current * root. It's safe inside commit_transaction(). @@ -2025,8 +2046,11 @@ int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans, record->bytenr, SEQ_LAST, &new_roots); if (ret < 0) goto cleanup; - if (qgroup_to_skip) + if (qgroup_to_skip) { ulist_del(new_roots, qgroup_to_skip, 0); + ulist_del(record->old_roots, qgroup_to_skip, + 0); + } ret = btrfs_qgroup_account_extent(trans, fs_info, record->bytenr, record->num_bytes, record->old_roots, new_roots); @@ -2338,6 +2362,11 @@ static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce) if (num_bytes == 0) return 0; + + if (test_bit(BTRFS_FS_QUOTA_OVERRIDE, &fs_info->flags) && + capable(CAP_SYS_RESOURCE)) + enforce = false; + retry: spin_lock(&fs_info->qgroup_lock); quota_root = fs_info->quota_root; @@ -2376,7 +2405,7 @@ retry: ret = btrfs_start_delalloc_inodes(root, 0); if (ret) return ret; - btrfs_wait_ordered_extents(root, -1, 0, (u64)-1); + btrfs_wait_ordered_extents(root, U64_MAX, 0, (u64)-1); trans = btrfs_join_transaction(root); if (IS_ERR(trans)) return PTR_ERR(trans); @@ -2806,55 +2835,130 @@ btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info) * Return <0 for error (including -EQUOT) * * NOTE: this function may sleep for memory allocation. + * if btrfs_qgroup_reserve_data() is called multiple times with + * same @reserved, caller must ensure when error happens it's OK + * to free *ALL* reserved space. */ -int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len) +int btrfs_qgroup_reserve_data(struct inode *inode, + struct extent_changeset **reserved_ret, u64 start, + u64 len) { struct btrfs_root *root = BTRFS_I(inode)->root; - struct extent_changeset changeset; struct ulist_node *unode; struct ulist_iterator uiter; + struct extent_changeset *reserved; + u64 orig_reserved; + u64 to_reserve; int ret; if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &root->fs_info->flags) || !is_fstree(root->objectid) || len == 0) return 0; - changeset.bytes_changed = 0; - ulist_init(&changeset.range_changed); + /* @reserved parameter is mandatory for qgroup */ + if (WARN_ON(!reserved_ret)) + return -EINVAL; + if (!*reserved_ret) { + *reserved_ret = extent_changeset_alloc(); + if (!*reserved_ret) + return -ENOMEM; + } + reserved = *reserved_ret; + /* Record already reserved space */ + orig_reserved = reserved->bytes_changed; ret = set_record_extent_bits(&BTRFS_I(inode)->io_tree, start, - start + len -1, EXTENT_QGROUP_RESERVED, &changeset); + start + len -1, EXTENT_QGROUP_RESERVED, reserved); + + /* Newly reserved space */ + to_reserve = reserved->bytes_changed - orig_reserved; trace_btrfs_qgroup_reserve_data(inode, start, len, - changeset.bytes_changed, - QGROUP_RESERVE); + to_reserve, QGROUP_RESERVE); if (ret < 0) goto cleanup; - ret = qgroup_reserve(root, changeset.bytes_changed, true); + ret = qgroup_reserve(root, to_reserve, true); if (ret < 0) goto cleanup; - ulist_release(&changeset.range_changed); return ret; cleanup: - /* cleanup already reserved ranges */ + /* cleanup *ALL* already reserved ranges */ ULIST_ITER_INIT(&uiter); - while ((unode = ulist_next(&changeset.range_changed, &uiter))) + while ((unode = ulist_next(&reserved->range_changed, &uiter))) clear_extent_bit(&BTRFS_I(inode)->io_tree, unode->val, unode->aux, EXTENT_QGROUP_RESERVED, 0, 0, NULL, GFP_NOFS); - ulist_release(&changeset.range_changed); + extent_changeset_release(reserved); + return ret; +} + +/* Free ranges specified by @reserved, normally in error path */ +static int qgroup_free_reserved_data(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len) +{ + struct btrfs_root *root = BTRFS_I(inode)->root; + struct ulist_node *unode; + struct ulist_iterator uiter; + struct extent_changeset changeset; + int freed = 0; + int ret; + + extent_changeset_init(&changeset); + len = round_up(start + len, root->fs_info->sectorsize); + start = round_down(start, root->fs_info->sectorsize); + + ULIST_ITER_INIT(&uiter); + while ((unode = ulist_next(&reserved->range_changed, &uiter))) { + u64 range_start = unode->val; + /* unode->aux is the inclusive end */ + u64 range_len = unode->aux - range_start + 1; + u64 free_start; + u64 free_len; + + extent_changeset_release(&changeset); + + /* Only free range in range [start, start + len) */ + if (range_start >= start + len || + range_start + range_len <= start) + continue; + free_start = max(range_start, start); + free_len = min(start + len, range_start + range_len) - + free_start; + /* + * TODO: To also modify reserved->ranges_reserved to reflect + * the modification. + * + * However as long as we free qgroup reserved according to + * EXTENT_QGROUP_RESERVED, we won't double free. + * So not need to rush. + */ + ret = clear_record_extent_bits(&BTRFS_I(inode)->io_failure_tree, + free_start, free_start + free_len - 1, + EXTENT_QGROUP_RESERVED, &changeset); + if (ret < 0) + goto out; + freed += changeset.bytes_changed; + } + btrfs_qgroup_free_refroot(root->fs_info, root->objectid, freed); + ret = freed; +out: + extent_changeset_release(&changeset); return ret; } -static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len, - int free) +static int __btrfs_qgroup_release_data(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len, + int free) { struct extent_changeset changeset; int trace_op = QGROUP_RELEASE; int ret; - changeset.bytes_changed = 0; - ulist_init(&changeset.range_changed); + /* In release case, we shouldn't have @reserved */ + WARN_ON(!free && reserved); + if (free && reserved) + return qgroup_free_reserved_data(inode, reserved, start, len); + extent_changeset_init(&changeset); ret = clear_record_extent_bits(&BTRFS_I(inode)->io_tree, start, start + len -1, EXTENT_QGROUP_RESERVED, &changeset); if (ret < 0) @@ -2868,8 +2972,9 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len, btrfs_qgroup_free_refroot(BTRFS_I(inode)->root->fs_info, BTRFS_I(inode)->root->objectid, changeset.bytes_changed); + ret = changeset.bytes_changed; out: - ulist_release(&changeset.range_changed); + extent_changeset_release(&changeset); return ret; } @@ -2878,14 +2983,17 @@ out: * * Should be called when a range of pages get invalidated before reaching disk. * Or for error cleanup case. + * if @reserved is given, only reserved range in [@start, @start + @len) will + * be freed. * * For data written to disk, use btrfs_qgroup_release_data(). * * NOTE: This function may sleep for memory allocation. */ -int btrfs_qgroup_free_data(struct inode *inode, u64 start, u64 len) +int btrfs_qgroup_free_data(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len) { - return __btrfs_qgroup_release_data(inode, start, len, 1); + return __btrfs_qgroup_release_data(inode, reserved, start, len, 1); } /* @@ -2905,7 +3013,7 @@ int btrfs_qgroup_free_data(struct inode *inode, u64 start, u64 len) */ int btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len) { - return __btrfs_qgroup_release_data(inode, start, len, 0); + return __btrfs_qgroup_release_data(inode, NULL, start, len, 0); } int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes, @@ -2969,8 +3077,7 @@ void btrfs_qgroup_check_reserved_leak(struct inode *inode) struct ulist_iterator iter; int ret; - changeset.bytes_changed = 0; - ulist_init(&changeset.range_changed); + extent_changeset_init(&changeset); ret = clear_record_extent_bits(&BTRFS_I(inode)->io_tree, 0, (u64)-1, EXTENT_QGROUP_RESERVED, &changeset); @@ -2987,5 +3094,5 @@ void btrfs_qgroup_check_reserved_leak(struct inode *inode) changeset.bytes_changed); } - ulist_release(&changeset.range_changed); + extent_changeset_release(&changeset); } diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h index fe04d3f295c6..d9984e87cddf 100644 --- a/fs/btrfs/qgroup.h +++ b/fs/btrfs/qgroup.h @@ -134,8 +134,7 @@ int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); struct btrfs_delayed_extent_op; -int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans, - struct btrfs_fs_info *fs_info); + /* * Inform qgroup to trace one dirty extent, its info is recorded in @record. * So qgroup can account it at transaction committing time. @@ -243,9 +242,11 @@ int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid, #endif /* New io_tree based accurate qgroup reserve API */ -int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len); +int btrfs_qgroup_reserve_data(struct inode *inode, + struct extent_changeset **reserved, u64 start, u64 len); int btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len); -int btrfs_qgroup_free_data(struct inode *inode, u64 start, u64 len); +int btrfs_qgroup_free_data(struct inode *inode, + struct extent_changeset *reserved, u64 start, u64 len); int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes, bool enforce); diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index f3d30d9ea8f9..6f845d219cd6 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -31,7 +31,7 @@ #include <linux/hash.h> #include <linux/list_sort.h> #include <linux/raid/xor.h> -#include <linux/vmalloc.h> +#include <linux/mm.h> #include <asm/div64.h> #include "ctree.h" #include "extent_map.h" @@ -218,12 +218,9 @@ int btrfs_alloc_stripe_hash_table(struct btrfs_fs_info *info) * of a failing mount. */ table_size = sizeof(*table) + sizeof(*h) * num_entries; - table = kzalloc(table_size, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT); - if (!table) { - table = vzalloc(table_size); - if (!table) - return -ENOMEM; - } + table = kvzalloc(table_size, GFP_KERNEL); + if (!table) + return -ENOMEM; spin_lock_init(&table->cache_lock); INIT_LIST_HEAD(&table->stripe_cache); @@ -1101,10 +1098,7 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio, } /* put a new bio on the list */ - bio = btrfs_io_bio_alloc(GFP_NOFS, bio_max_len >> PAGE_SHIFT?:1); - if (!bio) - return -ENOMEM; - + bio = btrfs_io_bio_alloc(bio_max_len >> PAGE_SHIFT ?: 1); bio->bi_iter.bi_size = 0; bio->bi_bdev = stripe->dev->bdev; bio->bi_iter.bi_sector = disk_start >> 9; diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index a17e775a4a89..ab852b8e3e37 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -66,7 +66,6 @@ struct reada_extctl { struct reada_extent { u64 logical; struct btrfs_key top; - int err; struct list_head extctl; int refcnt; spinlock_t lock; diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index d60df51959f7..65661d1aae4e 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3093,11 +3093,12 @@ int prealloc_file_extent_cluster(struct inode *inode, u64 prealloc_start = cluster->start - offset; u64 prealloc_end = cluster->end - offset; u64 cur_offset; + struct extent_changeset *data_reserved = NULL; BUG_ON(cluster->start != cluster->boundary[0]); inode_lock(inode); - ret = btrfs_check_data_free_space(inode, prealloc_start, + ret = btrfs_check_data_free_space(inode, &data_reserved, prealloc_start, prealloc_end + 1 - prealloc_start); if (ret) goto out; @@ -3113,8 +3114,8 @@ int prealloc_file_extent_cluster(struct inode *inode, lock_extent(&BTRFS_I(inode)->io_tree, start, end); num_bytes = end + 1 - start; if (cur_offset < start) - btrfs_free_reserved_data_space(inode, cur_offset, - start - cur_offset); + btrfs_free_reserved_data_space(inode, data_reserved, + cur_offset, start - cur_offset); ret = btrfs_prealloc_file_range(inode, 0, start, num_bytes, num_bytes, end + 1, &alloc_hint); @@ -3125,10 +3126,11 @@ int prealloc_file_extent_cluster(struct inode *inode, nr++; } if (cur_offset < prealloc_end) - btrfs_free_reserved_data_space(inode, cur_offset, - prealloc_end + 1 - cur_offset); + btrfs_free_reserved_data_space(inode, data_reserved, + cur_offset, prealloc_end + 1 - cur_offset); out: inode_unlock(inode); + extent_changeset_free(data_reserved); return ret; } @@ -4269,8 +4271,7 @@ static struct reloc_control *alloc_reloc_control(struct btrfs_fs_info *fs_info) INIT_LIST_HEAD(&rc->reloc_roots); backref_cache_init(&rc->backref_cache); mapping_tree_init(&rc->reloc_root_tree); - extent_io_tree_init(&rc->processed_blocks, - fs_info->btree_inode->i_mapping); + extent_io_tree_init(&rc->processed_blocks, NULL); return rc; } @@ -4372,7 +4373,7 @@ int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start) btrfs_wait_block_group_reservations(rc->block_group); btrfs_wait_nocow_writers(rc->block_group); - btrfs_wait_ordered_roots(fs_info, -1, + btrfs_wait_ordered_roots(fs_info, U64_MAX, rc->block_group->key.objectid, rc->block_group->key.offset); diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c index 7d6bc308bf43..460db0cb2d07 100644 --- a/fs/btrfs/root-tree.c +++ b/fs/btrfs/root-tree.c @@ -390,6 +390,13 @@ again: WARN_ON(btrfs_root_ref_dirid(leaf, ref) != dirid); WARN_ON(btrfs_root_ref_name_len(leaf, ref) != name_len); ptr = (unsigned long)(ref + 1); + ret = btrfs_is_name_len_valid(leaf, path->slots[0], ptr, + name_len); + if (!ret) { + err = -EIO; + goto out; + } + WARN_ON(memcmp_extent_buffer(leaf, name, ptr, name_len)); *sequence = btrfs_root_ref_sequence(leaf, ref); diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index ba5595d19de1..6f1e4c984b94 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -18,6 +18,7 @@ #include <linux/blkdev.h> #include <linux/ratelimit.h> +#include <linux/sched/mm.h> #include "ctree.h" #include "volumes.h" #include "disk-io.h" @@ -161,14 +162,6 @@ struct scrub_parity { unsigned long bitmap[0]; }; -struct scrub_wr_ctx { - struct scrub_bio *wr_curr_bio; - struct btrfs_device *tgtdev; - int pages_per_wr_bio; /* <= SCRUB_PAGES_PER_WR_BIO */ - atomic_t flush_all_writes; - struct mutex wr_lock; -}; - struct scrub_ctx { struct scrub_bio *bios[SCRUB_BIOS_PER_SCTX]; struct btrfs_fs_info *fs_info; @@ -183,11 +176,14 @@ struct scrub_ctx { atomic_t cancel_req; int readonly; int pages_per_rd_bio; - u32 sectorsize; - u32 nodesize; int is_dev_replace; - struct scrub_wr_ctx wr_ctx; + + struct scrub_bio *wr_curr_bio; + struct mutex wr_lock; + int pages_per_wr_bio; /* <= SCRUB_PAGES_PER_WR_BIO */ + atomic_t flush_all_writes; + struct btrfs_device *wr_tgtdev; /* * statistics @@ -289,10 +285,6 @@ static void scrub_remap_extent(struct btrfs_fs_info *fs_info, u64 *extent_physical, struct btrfs_device **extent_dev, int *extent_mirror_num); -static int scrub_setup_wr_ctx(struct scrub_wr_ctx *wr_ctx, - struct btrfs_device *dev, - int is_dev_replace); -static void scrub_free_wr_ctx(struct scrub_wr_ctx *wr_ctx); static int scrub_add_page_to_wr_bio(struct scrub_ctx *sctx, struct scrub_page *spage); static void scrub_wr_submit(struct scrub_ctx *sctx); @@ -643,8 +635,6 @@ static noinline_for_stack void scrub_free_ctx(struct scrub_ctx *sctx) if (!sctx) return; - scrub_free_wr_ctx(&sctx->wr_ctx); - /* this can happen when scrub is cancelled */ if (sctx->curr != -1) { struct scrub_bio *sbio = sctx->bios[sctx->curr]; @@ -664,6 +654,7 @@ static noinline_for_stack void scrub_free_ctx(struct scrub_ctx *sctx) kfree(sbio); } + kfree(sctx->wr_curr_bio); scrub_free_csums(sctx); kfree(sctx); } @@ -680,7 +671,6 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) struct scrub_ctx *sctx; int i; struct btrfs_fs_info *fs_info = dev->fs_info; - int ret; sctx = kzalloc(sizeof(*sctx), GFP_KERNEL); if (!sctx) @@ -710,8 +700,6 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) sctx->bios[i]->next_free = -1; } sctx->first_free = 0; - sctx->nodesize = fs_info->nodesize; - sctx->sectorsize = fs_info->sectorsize; atomic_set(&sctx->bios_in_flight, 0); atomic_set(&sctx->workers_pending, 0); atomic_set(&sctx->cancel_req, 0); @@ -722,12 +710,16 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) spin_lock_init(&sctx->stat_lock); init_waitqueue_head(&sctx->list_wait); - ret = scrub_setup_wr_ctx(&sctx->wr_ctx, - fs_info->dev_replace.tgtdev, is_dev_replace); - if (ret) { - scrub_free_ctx(sctx); - return ERR_PTR(ret); + WARN_ON(sctx->wr_curr_bio != NULL); + mutex_init(&sctx->wr_lock); + sctx->wr_curr_bio = NULL; + if (is_dev_replace) { + WARN_ON(!fs_info->dev_replace.tgtdev); + sctx->pages_per_wr_bio = SCRUB_PAGES_PER_WR_BIO; + sctx->wr_tgtdev = fs_info->dev_replace.tgtdev; + atomic_set(&sctx->flush_all_writes, 0); } + return sctx; nomem: @@ -742,6 +734,7 @@ static int scrub_print_warning_inode(u64 inum, u64 offset, u64 root, u32 nlink; int ret; int i; + unsigned nofs_flag; struct extent_buffer *eb; struct btrfs_inode_item *inode_item; struct scrub_warning *swarn = warn_ctx; @@ -780,7 +773,14 @@ static int scrub_print_warning_inode(u64 inum, u64 offset, u64 root, nlink = btrfs_inode_nlink(eb, inode_item); btrfs_release_path(swarn->path); + /* + * init_path might indirectly call vmalloc, or use GFP_KERNEL. Scrub + * uses GFP_NOFS in this context, so we keep it consistent but it does + * not seem to be strictly necessary. + */ + nofs_flag = memalloc_nofs_save(); ipath = init_ipath(4096, local_root, swarn->path); + memalloc_nofs_restore(nofs_flag); if (IS_ERR(ipath)) { ret = PTR_ERR(ipath); ipath = NULL; @@ -954,7 +954,7 @@ static int scrub_fixup_readpage(u64 inum, u64 offset, u64 root, void *fixup_ctx) ret = -EIO; goto out; } - ret = repair_io_failure(BTRFS_I(inode), offset, PAGE_SIZE, + ret = repair_io_failure(fs_info, inum, offset, PAGE_SIZE, fixup->logical, page, offset - page_offset(page), fixup->mirror_num); @@ -1737,12 +1737,7 @@ static void scrub_recheck_block(struct btrfs_fs_info *fs_info, } WARN_ON(!page->page); - bio = btrfs_io_bio_alloc(GFP_NOFS, 1); - if (!bio) { - page->io_error = 1; - sblock->no_io_error_seen = 0; - continue; - } + bio = btrfs_io_bio_alloc(1); bio->bi_bdev = page->dev->bdev; bio_add_page(bio, page->page, PAGE_SIZE, 0); @@ -1830,9 +1825,7 @@ static int scrub_repair_page_from_good_copy(struct scrub_block *sblock_bad, return -EIO; } - bio = btrfs_io_bio_alloc(GFP_NOFS, 1); - if (!bio) - return -EIO; + bio = btrfs_io_bio_alloc(1); bio->bi_bdev = page_bad->dev->bdev; bio->bi_iter.bi_sector = page_bad->physical >> 9; bio_set_op_attrs(bio, REQ_OP_WRITE, 0); @@ -1898,37 +1891,31 @@ static int scrub_write_page_to_dev_replace(struct scrub_block *sblock, static int scrub_add_page_to_wr_bio(struct scrub_ctx *sctx, struct scrub_page *spage) { - struct scrub_wr_ctx *wr_ctx = &sctx->wr_ctx; struct scrub_bio *sbio; int ret; - mutex_lock(&wr_ctx->wr_lock); + mutex_lock(&sctx->wr_lock); again: - if (!wr_ctx->wr_curr_bio) { - wr_ctx->wr_curr_bio = kzalloc(sizeof(*wr_ctx->wr_curr_bio), + if (!sctx->wr_curr_bio) { + sctx->wr_curr_bio = kzalloc(sizeof(*sctx->wr_curr_bio), GFP_KERNEL); - if (!wr_ctx->wr_curr_bio) { - mutex_unlock(&wr_ctx->wr_lock); + if (!sctx->wr_curr_bio) { + mutex_unlock(&sctx->wr_lock); return -ENOMEM; } - wr_ctx->wr_curr_bio->sctx = sctx; - wr_ctx->wr_curr_bio->page_count = 0; + sctx->wr_curr_bio->sctx = sctx; + sctx->wr_curr_bio->page_count = 0; } - sbio = wr_ctx->wr_curr_bio; + sbio = sctx->wr_curr_bio; if (sbio->page_count == 0) { struct bio *bio; sbio->physical = spage->physical_for_dev_replace; sbio->logical = spage->logical; - sbio->dev = wr_ctx->tgtdev; + sbio->dev = sctx->wr_tgtdev; bio = sbio->bio; if (!bio) { - bio = btrfs_io_bio_alloc(GFP_KERNEL, - wr_ctx->pages_per_wr_bio); - if (!bio) { - mutex_unlock(&wr_ctx->wr_lock); - return -ENOMEM; - } + bio = btrfs_io_bio_alloc(sctx->pages_per_wr_bio); sbio->bio = bio; } @@ -1951,7 +1938,7 @@ again: if (sbio->page_count < 1) { bio_put(sbio->bio); sbio->bio = NULL; - mutex_unlock(&wr_ctx->wr_lock); + mutex_unlock(&sctx->wr_lock); return -EIO; } scrub_wr_submit(sctx); @@ -1961,23 +1948,22 @@ again: sbio->pagev[sbio->page_count] = spage; scrub_page_get(spage); sbio->page_count++; - if (sbio->page_count == wr_ctx->pages_per_wr_bio) + if (sbio->page_count == sctx->pages_per_wr_bio) scrub_wr_submit(sctx); - mutex_unlock(&wr_ctx->wr_lock); + mutex_unlock(&sctx->wr_lock); return 0; } static void scrub_wr_submit(struct scrub_ctx *sctx) { - struct scrub_wr_ctx *wr_ctx = &sctx->wr_ctx; struct scrub_bio *sbio; - if (!wr_ctx->wr_curr_bio) + if (!sctx->wr_curr_bio) return; - sbio = wr_ctx->wr_curr_bio; - wr_ctx->wr_curr_bio = NULL; + sbio = sctx->wr_curr_bio; + sctx->wr_curr_bio = NULL; WARN_ON(!sbio->bio->bi_bdev); scrub_pending_bio_inc(sctx); /* process all writes in a single worker thread. Then the block layer @@ -2081,7 +2067,7 @@ static int scrub_checksum_data(struct scrub_block *sblock) page = sblock->pagev[0]->page; buffer = kmap_atomic(page); - len = sctx->sectorsize; + len = sctx->fs_info->sectorsize; index = 0; for (;;) { u64 l = min_t(u64, len, PAGE_SIZE); @@ -2146,7 +2132,7 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock) BTRFS_UUID_SIZE)) sblock->header_error = 1; - len = sctx->nodesize - BTRFS_CSUM_SIZE; + len = sctx->fs_info->nodesize - BTRFS_CSUM_SIZE; mapped_size = PAGE_SIZE - BTRFS_CSUM_SIZE; p = ((u8 *)mapped_buffer) + BTRFS_CSUM_SIZE; index = 0; @@ -2329,10 +2315,7 @@ again: sbio->dev = spage->dev; bio = sbio->bio; if (!bio) { - bio = btrfs_io_bio_alloc(GFP_KERNEL, - sctx->pages_per_rd_bio); - if (!bio) - return -ENOMEM; + bio = btrfs_io_bio_alloc(sctx->pages_per_rd_bio); sbio->bio = bio; } @@ -2420,10 +2403,10 @@ static void scrub_missing_raid56_worker(struct btrfs_work *work) scrub_block_put(sblock); if (sctx->is_dev_replace && - atomic_read(&sctx->wr_ctx.flush_all_writes)) { - mutex_lock(&sctx->wr_ctx.wr_lock); + atomic_read(&sctx->flush_all_writes)) { + mutex_lock(&sctx->wr_lock); scrub_wr_submit(sctx); - mutex_unlock(&sctx->wr_ctx.wr_lock); + mutex_unlock(&sctx->wr_lock); } scrub_pending_bio_dec(sctx); @@ -2458,10 +2441,7 @@ static void scrub_missing_raid56_pages(struct scrub_block *sblock) goto bbio_out; } - bio = btrfs_io_bio_alloc(GFP_NOFS, 0); - if (!bio) - goto bbio_out; - + bio = btrfs_io_bio_alloc(0); bio->bi_iter.bi_sector = logical >> 9; bio->bi_private = sblock; bio->bi_end_io = scrub_missing_raid56_end_io; @@ -2628,10 +2608,10 @@ static void scrub_bio_end_io_worker(struct btrfs_work *work) spin_unlock(&sctx->list_lock); if (sctx->is_dev_replace && - atomic_read(&sctx->wr_ctx.flush_all_writes)) { - mutex_lock(&sctx->wr_ctx.wr_lock); + atomic_read(&sctx->flush_all_writes)) { + mutex_lock(&sctx->wr_lock); scrub_wr_submit(sctx); - mutex_unlock(&sctx->wr_ctx.wr_lock); + mutex_unlock(&sctx->wr_lock); } scrub_pending_bio_dec(sctx); @@ -2726,8 +2706,8 @@ static int scrub_find_csum(struct scrub_ctx *sctx, u64 logical, u8 *csum) if (!sum) return 0; - index = ((u32)(logical - sum->bytenr)) / sctx->sectorsize; - num_sectors = sum->len / sctx->sectorsize; + index = ((u32)(logical - sum->bytenr)) / sctx->fs_info->sectorsize; + num_sectors = sum->len / sctx->fs_info->sectorsize; memcpy(csum, sum->sums + index, sctx->csum_size); if (index == num_sectors - 1) { list_del(&sum->list); @@ -2746,19 +2726,19 @@ static int scrub_extent(struct scrub_ctx *sctx, u64 logical, u64 len, u32 blocksize; if (flags & BTRFS_EXTENT_FLAG_DATA) { - blocksize = sctx->sectorsize; + blocksize = sctx->fs_info->sectorsize; spin_lock(&sctx->stat_lock); sctx->stat.data_extents_scrubbed++; sctx->stat.data_bytes_scrubbed += len; spin_unlock(&sctx->stat_lock); } else if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) { - blocksize = sctx->nodesize; + blocksize = sctx->fs_info->nodesize; spin_lock(&sctx->stat_lock); sctx->stat.tree_extents_scrubbed++; sctx->stat.tree_bytes_scrubbed += len; spin_unlock(&sctx->stat_lock); } else { - blocksize = sctx->sectorsize; + blocksize = sctx->fs_info->sectorsize; WARN_ON(1); } @@ -2892,11 +2872,11 @@ static int scrub_extent_for_parity(struct scrub_parity *sparity, } if (flags & BTRFS_EXTENT_FLAG_DATA) { - blocksize = sctx->sectorsize; + blocksize = sctx->fs_info->sectorsize; } else if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) { - blocksize = sctx->nodesize; + blocksize = sctx->fs_info->nodesize; } else { - blocksize = sctx->sectorsize; + blocksize = sctx->fs_info->sectorsize; WARN_ON(1); } @@ -3037,10 +3017,7 @@ static void scrub_parity_check_and_repair(struct scrub_parity *sparity) if (ret || !bbio || !bbio->raid_map) goto bbio_out; - bio = btrfs_io_bio_alloc(GFP_NOFS, 0); - if (!bio) - goto bbio_out; - + bio = btrfs_io_bio_alloc(0); bio->bi_iter.bi_sector = sparity->logic_start >> 9; bio->bi_private = sparity; bio->bi_end_io = scrub_parity_bio_endio; @@ -3305,9 +3282,9 @@ out: logic_end - logic_start); scrub_parity_put(sparity); scrub_submit(sctx); - mutex_lock(&sctx->wr_ctx.wr_lock); + mutex_lock(&sctx->wr_lock); scrub_wr_submit(sctx); - mutex_unlock(&sctx->wr_ctx.wr_lock); + mutex_unlock(&sctx->wr_lock); btrfs_release_path(path); return ret < 0 ? ret : 0; @@ -3463,14 +3440,14 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, */ if (atomic_read(&fs_info->scrub_pause_req)) { /* push queued extents */ - atomic_set(&sctx->wr_ctx.flush_all_writes, 1); + atomic_set(&sctx->flush_all_writes, 1); scrub_submit(sctx); - mutex_lock(&sctx->wr_ctx.wr_lock); + mutex_lock(&sctx->wr_lock); scrub_wr_submit(sctx); - mutex_unlock(&sctx->wr_ctx.wr_lock); + mutex_unlock(&sctx->wr_lock); wait_event(sctx->list_wait, atomic_read(&sctx->bios_in_flight) == 0); - atomic_set(&sctx->wr_ctx.flush_all_writes, 0); + atomic_set(&sctx->flush_all_writes, 0); scrub_blocked_if_needed(fs_info); } @@ -3677,9 +3654,9 @@ skip: out: /* push queued extents */ scrub_submit(sctx); - mutex_lock(&sctx->wr_ctx.wr_lock); + mutex_lock(&sctx->wr_lock); scrub_wr_submit(sctx); - mutex_unlock(&sctx->wr_ctx.wr_lock); + mutex_unlock(&sctx->wr_lock); blk_finish_plug(&plug); btrfs_free_path(path); @@ -3859,7 +3836,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, */ btrfs_wait_block_group_reservations(cache); btrfs_wait_nocow_writers(cache); - ret = btrfs_wait_ordered_roots(fs_info, -1, + ret = btrfs_wait_ordered_roots(fs_info, U64_MAX, cache->key.objectid, cache->key.offset); if (ret > 0) { @@ -3916,11 +3893,11 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, * write requests are really completed when bios_in_flight * changes to 0. */ - atomic_set(&sctx->wr_ctx.flush_all_writes, 1); + atomic_set(&sctx->flush_all_writes, 1); scrub_submit(sctx); - mutex_lock(&sctx->wr_ctx.wr_lock); + mutex_lock(&sctx->wr_lock); scrub_wr_submit(sctx); - mutex_unlock(&sctx->wr_ctx.wr_lock); + mutex_unlock(&sctx->wr_lock); wait_event(sctx->list_wait, atomic_read(&sctx->bios_in_flight) == 0); @@ -3934,7 +3911,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, */ wait_event(sctx->list_wait, atomic_read(&sctx->workers_pending) == 0); - atomic_set(&sctx->wr_ctx.flush_all_writes, 0); + atomic_set(&sctx->flush_all_writes, 0); scrub_pause_off(fs_info); @@ -4337,32 +4314,6 @@ static void scrub_remap_extent(struct btrfs_fs_info *fs_info, btrfs_put_bbio(bbio); } -static int scrub_setup_wr_ctx(struct scrub_wr_ctx *wr_ctx, - struct btrfs_device *dev, - int is_dev_replace) -{ - WARN_ON(wr_ctx->wr_curr_bio != NULL); - - mutex_init(&wr_ctx->wr_lock); - wr_ctx->wr_curr_bio = NULL; - if (!is_dev_replace) - return 0; - - WARN_ON(!dev->bdev); - wr_ctx->pages_per_wr_bio = SCRUB_PAGES_PER_WR_BIO; - wr_ctx->tgtdev = dev; - atomic_set(&wr_ctx->flush_all_writes, 0); - return 0; -} - -static void scrub_free_wr_ctx(struct scrub_wr_ctx *wr_ctx) -{ - mutex_lock(&wr_ctx->wr_lock); - kfree(wr_ctx->wr_curr_bio); - wr_ctx->wr_curr_bio = NULL; - mutex_unlock(&wr_ctx->wr_lock); -} - static int copy_nocow_pages(struct scrub_ctx *sctx, u64 logical, u64 len, int mirror_num, u64 physical_for_dev_replace) { @@ -4665,7 +4616,7 @@ static int write_page_nocow(struct scrub_ctx *sctx, struct btrfs_device *dev; int ret; - dev = sctx->wr_ctx.tgtdev; + dev = sctx->wr_tgtdev; if (!dev) return -EIO; if (!dev->bdev) { @@ -4673,13 +4624,7 @@ static int write_page_nocow(struct scrub_ctx *sctx, "scrub write_page_nocow(bdev == NULL) is unexpected"); return -EIO; } - bio = btrfs_io_bio_alloc(GFP_NOFS, 1); - if (!bio) { - spin_lock(&sctx->stat_lock); - sctx->stat.malloc_errors++; - spin_unlock(&sctx->stat_lock); - return -ENOMEM; - } + bio = btrfs_io_bio_alloc(1); bio->bi_iter.bi_size = 0; bio->bi_iter.bi_sector = physical_for_dev_replace >> 9; bio->bi_bdev = dev->bdev; diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index fc496a6f842a..e937c10b8287 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -1069,6 +1069,12 @@ static int iterate_dir_item(struct btrfs_root *root, struct btrfs_path *path, } } + ret = btrfs_is_name_len_valid(eb, path->slots[0], + (unsigned long)(di + 1), name_len + data_len); + if (!ret) { + ret = -EIO; + goto out; + } if (name_len + data_len > buf_len) { buf_len = name_len + data_len; if (is_vmalloc_addr(buf)) { @@ -1083,7 +1089,7 @@ static int iterate_dir_item(struct btrfs_root *root, struct btrfs_path *path, buf = tmp; } if (!buf) { - buf = vmalloc(buf_len); + buf = kvmalloc(buf_len, GFP_KERNEL); if (!buf) { ret = -ENOMEM; goto out; @@ -2769,15 +2775,20 @@ out: struct recorded_ref { struct list_head list; - char *dir_path; char *name; struct fs_path *full_path; u64 dir; u64 dir_gen; - int dir_path_len; int name_len; }; +static void set_ref_path(struct recorded_ref *ref, struct fs_path *path) +{ + ref->full_path = path; + ref->name = (char *)kbasename(ref->full_path->start); + ref->name_len = ref->full_path->end - ref->name; +} + /* * We need to process new refs before deleted refs, but compare_tree gives us * everything mixed. So we first record all refs and later process them. @@ -2794,17 +2805,7 @@ static int __record_ref(struct list_head *head, u64 dir, ref->dir = dir; ref->dir_gen = dir_gen; - ref->full_path = path; - - ref->name = (char *)kbasename(ref->full_path->start); - ref->name_len = ref->full_path->end - ref->name; - ref->dir_path = ref->full_path->start; - if (ref->name == ref->full_path->start) - ref->dir_path_len = 0; - else - ref->dir_path_len = ref->full_path->end - - ref->full_path->start - 1 - ref->name_len; - + set_ref_path(ref, path); list_add_tail(&ref->list, head); return 0; } @@ -3546,9 +3547,17 @@ static int is_ancestor(struct btrfs_root *root, struct fs_path *fs_path) { u64 ino = ino2; + bool free_path = false; + int ret = 0; + + if (!fs_path) { + fs_path = fs_path_alloc(); + if (!fs_path) + return -ENOMEM; + free_path = true; + } while (ino > BTRFS_FIRST_FREE_OBJECTID) { - int ret; u64 parent; u64 parent_gen; @@ -3557,13 +3566,18 @@ static int is_ancestor(struct btrfs_root *root, if (ret < 0) { if (ret == -ENOENT && ino == ino2) ret = 0; - return ret; + goto out; + } + if (parent == ino1) { + ret = parent_gen == ino1_gen ? 1 : 0; + goto out; } - if (parent == ino1) - return parent_gen == ino1_gen ? 1 : 0; ino = parent; } - return 0; + out: + if (free_path) + fs_path_free(fs_path); + return ret; } static int wait_for_parent_move(struct send_ctx *sctx, @@ -3686,6 +3700,7 @@ static int process_recorded_refs(struct send_ctx *sctx, int *pending_move) int is_orphan = 0; u64 last_dir_ino_rm = 0; bool can_rename = true; + bool orphanized_ancestor = false; btrfs_debug(fs_info, "process_recorded_refs %llu", sctx->cur_ino); @@ -3837,9 +3852,16 @@ static int process_recorded_refs(struct send_ctx *sctx, int *pending_move) * might contain the pre-orphanization name of * ow_inode, which is no longer valid. */ - fs_path_reset(valid_path); - ret = get_cur_path(sctx, sctx->cur_ino, - sctx->cur_inode_gen, valid_path); + ret = is_ancestor(sctx->parent_root, + ow_inode, ow_gen, + sctx->cur_ino, NULL); + if (ret > 0) { + orphanized_ancestor = true; + fs_path_reset(valid_path); + ret = get_cur_path(sctx, sctx->cur_ino, + sctx->cur_inode_gen, + valid_path); + } if (ret < 0) goto out; } else { @@ -3960,6 +3982,43 @@ static int process_recorded_refs(struct send_ctx *sctx, int *pending_move) if (ret < 0) goto out; if (!ret) { + /* + * If we orphanized any ancestor before, we need + * to recompute the full path for deleted names, + * since any such path was computed before we + * processed any references and orphanized any + * ancestor inode. + */ + if (orphanized_ancestor) { + struct fs_path *new_path; + + /* + * Our reference's name member points to + * its full_path member string, so we + * use here a new path. + */ + new_path = fs_path_alloc(); + if (!new_path) { + ret = -ENOMEM; + goto out; + } + ret = get_cur_path(sctx, cur->dir, + cur->dir_gen, + new_path); + if (ret < 0) { + fs_path_free(new_path); + goto out; + } + ret = fs_path_add(new_path, + cur->name, + cur->name_len); + if (ret < 0) { + fs_path_free(new_path); + goto out; + } + fs_path_free(cur->full_path); + set_ref_path(cur, new_path); + } ret = send_unlink(sctx, cur->full_path); if (ret < 0) goto out; @@ -6397,13 +6456,10 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_) alloc_size = sizeof(struct clone_root) * (arg->clone_sources_count + 1); - sctx->clone_roots = kzalloc(alloc_size, GFP_KERNEL | __GFP_NOWARN); + sctx->clone_roots = kzalloc(alloc_size, GFP_KERNEL); if (!sctx->clone_roots) { - sctx->clone_roots = vzalloc(alloc_size); - if (!sctx->clone_roots) { - ret = -ENOMEM; - goto out; - } + ret = -ENOMEM; + goto out; } alloc_size = arg->clone_sources_count * sizeof(*arg->clone_sources); diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 4f1cdd5058f1..74e47794e63f 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -601,18 +601,8 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, } break; case Opt_alloc_start: - num = match_strdup(&args[0]); - if (num) { - mutex_lock(&info->chunk_mutex); - info->alloc_start = memparse(num, NULL); - mutex_unlock(&info->chunk_mutex); - kfree(num); - btrfs_info(info, "allocations start at %llu", - info->alloc_start); - } else { - ret = -ENOMEM; - goto out; - } + btrfs_info(info, + "option alloc_start is obsolete, ignored"); break; case Opt_acl: #ifdef CONFIG_BTRFS_FS_POSIX_ACL @@ -1187,7 +1177,7 @@ int btrfs_sync_fs(struct super_block *sb, int wait) return 0; } - btrfs_wait_ordered_roots(fs_info, -1, 0, (u64)-1); + btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1); trans = btrfs_attach_transaction_barrier(root); if (IS_ERR(trans)) { @@ -1232,8 +1222,6 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) seq_puts(seq, ",nobarrier"); if (info->max_inline != BTRFS_DEFAULT_MAX_INLINE) seq_printf(seq, ",max_inline=%llu", info->max_inline); - if (info->alloc_start != 0) - seq_printf(seq, ",alloc_start=%llu", info->alloc_start); if (info->thread_pool_size != min_t(unsigned long, num_online_cpus() + 2, 8)) seq_printf(seq, ",thread_pool=%d", info->thread_pool_size); @@ -1716,7 +1704,6 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data) unsigned long old_opts = fs_info->mount_opt; unsigned long old_compress_type = fs_info->compress_type; u64 old_max_inline = fs_info->max_inline; - u64 old_alloc_start = fs_info->alloc_start; int old_thread_pool_size = fs_info->thread_pool_size; unsigned int old_metadata_ratio = fs_info->metadata_ratio; int ret; @@ -1855,9 +1842,6 @@ restore: fs_info->mount_opt = old_opts; fs_info->compress_type = old_compress_type; fs_info->max_inline = old_max_inline; - mutex_lock(&fs_info->chunk_mutex); - fs_info->alloc_start = old_alloc_start; - mutex_unlock(&fs_info->chunk_mutex); btrfs_resize_thread_pool(fs_info, old_thread_pool_size, fs_info->thread_pool_size); fs_info->metadata_ratio = old_metadata_ratio; @@ -1898,18 +1882,15 @@ static inline void btrfs_descending_sort_devices( static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, u64 *free_bytes) { - struct btrfs_root *root = fs_info->tree_root; struct btrfs_device_info *devices_info; struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; struct btrfs_device *device; u64 skip_space; u64 type; u64 avail_space; - u64 used_space; u64 min_stripe_size; int min_stripes = 1, num_stripes = 1; int i = 0, nr_devices; - int ret; /* * We aren't under the device list lock, so this is racy-ish, but good @@ -1927,12 +1908,12 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, } devices_info = kmalloc_array(nr_devices, sizeof(*devices_info), - GFP_NOFS); + GFP_KERNEL); if (!devices_info) return -ENOMEM; /* calc min stripe number for data space allocation */ - type = btrfs_get_alloc_profile(root, 1); + type = btrfs_data_alloc_profile(fs_info); if (type & BTRFS_BLOCK_GROUP_RAID0) { min_stripes = 2; num_stripes = nr_devices; @@ -1949,8 +1930,6 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, else min_stripe_size = BTRFS_STRIPE_LEN; - if (fs_info->alloc_start) - mutex_lock(&fs_devices->device_list_mutex); rcu_read_lock(); list_for_each_entry_rcu(device, &fs_devices->devices, dev_list) { if (!device->in_fs_metadata || !device->bdev || @@ -1973,34 +1952,6 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, */ skip_space = SZ_1M; - /* user can set the offset in fs_info->alloc_start. */ - if (fs_info->alloc_start && - fs_info->alloc_start + BTRFS_STRIPE_LEN <= - device->total_bytes) { - rcu_read_unlock(); - skip_space = max(fs_info->alloc_start, skip_space); - - /* - * btrfs can not use the free space in - * [0, skip_space - 1], we must subtract it from the - * total. In order to implement it, we account the used - * space in this range first. - */ - ret = btrfs_account_dev_extents_size(device, 0, - skip_space - 1, - &used_space); - if (ret) { - kfree(devices_info); - mutex_unlock(&fs_devices->device_list_mutex); - return ret; - } - - rcu_read_lock(); - - /* calc the free space in [0, skip_space - 1] */ - skip_space -= used_space; - } - /* * we can use the free space in [0, skip_space - 1], subtract * it from the total. @@ -2019,8 +1970,6 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, i++; } rcu_read_unlock(); - if (fs_info->alloc_start) - mutex_unlock(&fs_devices->device_list_mutex); nr_devices = i; @@ -2057,10 +2006,9 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info, * multiplier to scale the sizes. * * Unused device space usage is based on simulating the chunk allocator - * algorithm that respects the device sizes, order of allocations and the - * 'alloc_start' value, this is a close approximation of the actual use but - * there are other factors that may change the result (like a new metadata - * chunk). + * algorithm that respects the device sizes and order of allocations. This is + * a close approximation of the actual use but there are other factors that may + * change the result (like a new metadata chunk). * * If metadata is exhausted, f_bavail will be 0. */ @@ -2243,7 +2191,7 @@ static int btrfs_freeze(struct super_block *sb) struct btrfs_fs_info *fs_info = btrfs_sb(sb); struct btrfs_root *root = fs_info->tree_root; - fs_info->fs_frozen = 1; + set_bit(BTRFS_FS_FROZEN, &fs_info->flags); /* * We don't need a barrier here, we'll wait for any transaction that * could be in progress on other threads (and do delayed iputs that @@ -2262,7 +2210,9 @@ static int btrfs_freeze(struct super_block *sb) static int btrfs_unfreeze(struct super_block *sb) { - btrfs_sb(sb)->fs_frozen = 0; + struct btrfs_fs_info *fs_info = btrfs_sb(sb); + + clear_bit(BTRFS_FS_FROZEN, &fs_info->flags); return 0; } diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 1f157fba8940..c2d5f3580b4c 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -447,11 +447,52 @@ static ssize_t btrfs_clone_alignment_show(struct kobject *kobj, BTRFS_ATTR(clone_alignment, btrfs_clone_alignment_show); +static ssize_t quota_override_show(struct kobject *kobj, + struct kobj_attribute *a, char *buf) +{ + struct btrfs_fs_info *fs_info = to_fs_info(kobj); + int quota_override; + + quota_override = test_bit(BTRFS_FS_QUOTA_OVERRIDE, &fs_info->flags); + return snprintf(buf, PAGE_SIZE, "%d\n", quota_override); +} + +static ssize_t quota_override_store(struct kobject *kobj, + struct kobj_attribute *a, + const char *buf, size_t len) +{ + struct btrfs_fs_info *fs_info = to_fs_info(kobj); + unsigned long knob; + int err; + + if (!fs_info) + return -EPERM; + + if (!capable(CAP_SYS_RESOURCE)) + return -EPERM; + + err = kstrtoul(buf, 10, &knob); + if (err) + return err; + if (knob > 1) + return -EINVAL; + + if (knob) + set_bit(BTRFS_FS_QUOTA_OVERRIDE, &fs_info->flags); + else + clear_bit(BTRFS_FS_QUOTA_OVERRIDE, &fs_info->flags); + + return len; +} + +BTRFS_ATTR_RW(quota_override, quota_override_show, quota_override_store); + static const struct attribute *btrfs_attrs[] = { BTRFS_ATTR_PTR(label), BTRFS_ATTR_PTR(nodesize), BTRFS_ATTR_PTR(sectorsize), BTRFS_ATTR_PTR(clone_alignment), + BTRFS_ATTR_PTR(quota_override), NULL, }; diff --git a/fs/btrfs/tests/extent-io-tests.c b/fs/btrfs/tests/extent-io-tests.c index 133753232a94..d06b1c931d05 100644 --- a/fs/btrfs/tests/extent-io-tests.c +++ b/fs/btrfs/tests/extent-io-tests.c @@ -87,7 +87,7 @@ static int test_find_delalloc(u32 sectorsize) return -ENOMEM; } - extent_io_tree_init(&tmp, &inode->i_data); + extent_io_tree_init(&tmp, inode); /* * First go through and create and mark all of our pages dirty, we pin diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 2168654c90a1..f615d59b0489 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -93,7 +93,7 @@ void btrfs_put_transaction(struct btrfs_transaction *transaction) btrfs_put_block_group_trimming(cache); btrfs_put_block_group(cache); } - kmem_cache_free(btrfs_transaction_cachep, transaction); + kfree(transaction); } } @@ -228,7 +228,7 @@ loop: */ BUG_ON(type == TRANS_JOIN_NOLOCK); - cur_trans = kmem_cache_alloc(btrfs_transaction_cachep, GFP_NOFS); + cur_trans = kmalloc(sizeof(*cur_trans), GFP_NOFS); if (!cur_trans) return -ENOMEM; @@ -238,11 +238,11 @@ loop: * someone started a transaction after we unlocked. Make sure * to redo the checks above */ - kmem_cache_free(btrfs_transaction_cachep, cur_trans); + kfree(cur_trans); goto loop; } else if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) { spin_unlock(&fs_info->trans_lock); - kmem_cache_free(btrfs_transaction_cachep, cur_trans); + kfree(cur_trans); return -EROFS; } @@ -294,7 +294,7 @@ loop: spin_lock_init(&cur_trans->dropped_roots_lock); list_add_tail(&cur_trans->list, &fs_info->trans_list); extent_io_tree_init(&cur_trans->dirty_pages, - fs_info->btree_inode->i_mapping); + fs_info->btree_inode); fs_info->generation++; cur_trans->transid = fs_info->generation; fs_info->running_transaction = cur_trans; @@ -1374,9 +1374,6 @@ static int qgroup_account_snapshot(struct btrfs_trans_handle *trans, ret = commit_fs_roots(trans, fs_info); if (ret) goto out; - ret = btrfs_qgroup_prepare_account_extents(trans, fs_info); - if (ret < 0) - goto out; ret = btrfs_qgroup_account_extents(trans, fs_info); if (ret < 0) goto out; @@ -1926,7 +1923,7 @@ static inline int btrfs_start_delalloc_flush(struct btrfs_fs_info *fs_info) static inline void btrfs_wait_delalloc_flush(struct btrfs_fs_info *fs_info) { if (btrfs_test_opt(fs_info, FLUSHONCOMMIT)) - btrfs_wait_ordered_roots(fs_info, -1, 0, (u64)-1); + btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1); } static inline void @@ -2180,13 +2177,6 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans) goto scrub_continue; } - ret = btrfs_qgroup_prepare_account_extents(trans, fs_info); - if (ret) { - mutex_unlock(&fs_info->tree_log_mutex); - mutex_unlock(&fs_info->reloc_mutex); - goto scrub_continue; - } - /* * Since fs roots are all committed, we can get a quite accurate * new_roots. So let's do quota accounting. @@ -2314,7 +2304,8 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans) * it'll result in deadlock about SB_FREEZE_FS. */ if (current != fs_info->transaction_kthread && - current != fs_info->cleaner_kthread && !fs_info->fs_frozen) + current != fs_info->cleaner_kthread && + !test_bit(BTRFS_FS_FROZEN, &fs_info->flags)) btrfs_run_delayed_iputs(fs_info); return ret; diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index ccfe9fe7754a..f20ef211a73d 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -1175,15 +1175,19 @@ next: return 0; } -static int extref_get_fields(struct extent_buffer *eb, unsigned long ref_ptr, - u32 *namelen, char **name, u64 *index, - u64 *parent_objectid) +static int extref_get_fields(struct extent_buffer *eb, int slot, + unsigned long ref_ptr, u32 *namelen, char **name, + u64 *index, u64 *parent_objectid) { struct btrfs_inode_extref *extref; extref = (struct btrfs_inode_extref *)ref_ptr; *namelen = btrfs_inode_extref_name_len(eb, extref); + if (!btrfs_is_name_len_valid(eb, slot, (unsigned long)&extref->name, + *namelen)) + return -EIO; + *name = kmalloc(*namelen, GFP_NOFS); if (*name == NULL) return -ENOMEM; @@ -1198,14 +1202,19 @@ static int extref_get_fields(struct extent_buffer *eb, unsigned long ref_ptr, return 0; } -static int ref_get_fields(struct extent_buffer *eb, unsigned long ref_ptr, - u32 *namelen, char **name, u64 *index) +static int ref_get_fields(struct extent_buffer *eb, int slot, + unsigned long ref_ptr, u32 *namelen, char **name, + u64 *index) { struct btrfs_inode_ref *ref; ref = (struct btrfs_inode_ref *)ref_ptr; *namelen = btrfs_inode_ref_name_len(eb, ref); + if (!btrfs_is_name_len_valid(eb, slot, (unsigned long)(ref + 1), + *namelen)) + return -EIO; + *name = kmalloc(*namelen, GFP_NOFS); if (*name == NULL) return -ENOMEM; @@ -1280,8 +1289,8 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans, while (ref_ptr < ref_end) { if (log_ref_ver) { - ret = extref_get_fields(eb, ref_ptr, &namelen, &name, - &ref_index, &parent_objectid); + ret = extref_get_fields(eb, slot, ref_ptr, &namelen, + &name, &ref_index, &parent_objectid); /* * parent object can change from one array * item to another. @@ -1293,8 +1302,8 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans, goto out; } } else { - ret = ref_get_fields(eb, ref_ptr, &namelen, &name, - &ref_index); + ret = ref_get_fields(eb, slot, ref_ptr, &namelen, + &name, &ref_index); } if (ret) goto out; @@ -1841,7 +1850,7 @@ static noinline int replay_one_dir_item(struct btrfs_trans_handle *trans, ptr_end = ptr + item_size; while (ptr < ptr_end) { di = (struct btrfs_dir_item *)ptr; - if (verify_dir_item(fs_info, eb, di)) + if (verify_dir_item(fs_info, eb, slot, di)) return -EIO; name_len = btrfs_dir_name_len(eb, di); ret = replay_one_name(trans, root, path, eb, di, key); @@ -2017,7 +2026,7 @@ again: ptr_end = ptr + item_size; while (ptr < ptr_end) { di = (struct btrfs_dir_item *)ptr; - if (verify_dir_item(fs_info, eb, di)) { + if (verify_dir_item(fs_info, eb, slot, di)) { ret = -EIO; goto out; } @@ -2102,6 +2111,7 @@ static int replay_xattr_deletes(struct btrfs_trans_handle *trans, struct btrfs_path *path, const u64 ino) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_key search_key; struct btrfs_path *log_path; int i; @@ -2143,6 +2153,12 @@ process_leaf: u32 this_len = sizeof(*di) + name_len + data_len; char *name; + ret = verify_dir_item(fs_info, path->nodes[0], + path->slots[0], di); + if (ret) { + ret = -EIO; + goto out; + } name = kmalloc(name_len, GFP_NOFS); if (!name) { ret = -ENOMEM; @@ -4546,6 +4562,12 @@ static int btrfs_check_ref_name_override(struct extent_buffer *eb, this_len = sizeof(*extref) + this_name_len; } + ret = btrfs_is_name_len_valid(eb, slot, name_ptr, + this_name_len); + if (!ret) { + ret = -EIO; + goto out; + } if (this_name_len > name_len) { char *new_name; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 84a495967e0a..5eb7217738ed 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -242,6 +242,17 @@ static struct btrfs_device *__alloc_device(void) if (!dev) return ERR_PTR(-ENOMEM); + /* + * Preallocate a bio that's always going to be used for flushing device + * barriers and matches the device lifespan + */ + dev->flush_bio = bio_alloc_bioset(GFP_KERNEL, 0, NULL); + if (!dev->flush_bio) { + kfree(dev); + return ERR_PTR(-ENOMEM); + } + bio_get(dev->flush_bio); + INIT_LIST_HEAD(&dev->dev_list); INIT_LIST_HEAD(&dev->dev_alloc_list); INIT_LIST_HEAD(&dev->resized_list); @@ -838,6 +849,7 @@ static void __free_device(struct work_struct *work) device = container_of(work, struct btrfs_device, rcu_work); rcu_string_free(device->name); + bio_put(device->flush_bio); kfree(device); } @@ -1353,15 +1365,13 @@ int find_free_dev_extent_start(struct btrfs_transaction *transaction, int ret; int slot; struct extent_buffer *l; - u64 min_search_start; /* * We don't want to overwrite the superblock on the drive nor any area * used by the boot loader (grub for example), so we make sure to start * at an offset of at least 1MB. */ - min_search_start = max(fs_info->alloc_start, 1024ull * 1024); - search_start = max(search_start, min_search_start); + search_start = max_t(u64, search_start, SZ_1M); path = btrfs_alloc_path(); if (!path) @@ -2387,7 +2397,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path device->io_width = fs_info->sectorsize; device->io_align = fs_info->sectorsize; device->sector_size = fs_info->sectorsize; - device->total_bytes = i_size_read(bdev->bd_inode); + device->total_bytes = round_down(i_size_read(bdev->bd_inode), + fs_info->sectorsize); device->disk_total_bytes = device->total_bytes; device->commit_total_bytes = device->total_bytes; device->fs_info = fs_info; @@ -2417,16 +2428,14 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path fs_info->fs_devices->total_devices++; fs_info->fs_devices->total_rw_bytes += device->total_bytes; - spin_lock(&fs_info->free_chunk_lock); - fs_info->free_chunk_space += device->total_bytes; - spin_unlock(&fs_info->free_chunk_lock); + atomic64_add(device->total_bytes, &fs_info->free_chunk_space); if (!blk_queue_nonrot(q)) fs_info->fs_devices->rotating = 1; tmp = btrfs_super_total_bytes(fs_info->super_copy); btrfs_set_super_total_bytes(fs_info->super_copy, - tmp + device->total_bytes); + round_down(tmp + device->total_bytes, fs_info->sectorsize)); tmp = btrfs_super_num_devices(fs_info->super_copy); btrfs_set_super_num_devices(fs_info->super_copy, tmp + 1); @@ -2574,7 +2583,7 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, goto error; } - name = rcu_string_strdup(device_path, GFP_NOFS); + name = rcu_string_strdup(device_path, GFP_KERNEL); if (!name) { kfree(device); ret = -ENOMEM; @@ -2689,6 +2698,8 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, if (!device->writeable) return -EACCES; + new_size = round_down(new_size, fs_info->sectorsize); + mutex_lock(&fs_info->chunk_mutex); old_total = btrfs_super_total_bytes(super_copy); diff = new_size - device->total_bytes; @@ -2701,7 +2712,8 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, fs_devices = fs_info->fs_devices; - btrfs_set_super_total_bytes(super_copy, old_total + diff); + btrfs_set_super_total_bytes(super_copy, + round_down(old_total + diff, fs_info->sectorsize)); device->fs_devices->total_rw_bytes += diff; btrfs_device_set_total_bytes(device, new_size); @@ -2874,9 +2886,7 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans, mutex_lock(&fs_info->chunk_mutex); btrfs_device_set_bytes_used(device, device->bytes_used - dev_extent_len); - spin_lock(&fs_info->free_chunk_lock); - fs_info->free_chunk_space += dev_extent_len; - spin_unlock(&fs_info->free_chunk_lock); + atomic64_add(dev_extent_len, &fs_info->free_chunk_space); btrfs_clear_space_info_full(fs_info); mutex_unlock(&fs_info->chunk_mutex); } @@ -4393,7 +4403,10 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) struct btrfs_super_block *super_copy = fs_info->super_copy; u64 old_total = btrfs_super_total_bytes(super_copy); u64 old_size = btrfs_device_get_total_bytes(device); - u64 diff = old_size - new_size; + u64 diff; + + new_size = round_down(new_size, fs_info->sectorsize); + diff = old_size - new_size; if (device->is_tgtdev_for_dev_replace) return -EINVAL; @@ -4409,9 +4422,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) btrfs_device_set_total_bytes(device, new_size); if (device->writeable) { device->fs_devices->total_rw_bytes -= diff; - spin_lock(&fs_info->free_chunk_lock); - fs_info->free_chunk_space -= diff; - spin_unlock(&fs_info->free_chunk_lock); + atomic64_sub(diff, &fs_info->free_chunk_space); } mutex_unlock(&fs_info->chunk_mutex); @@ -4522,7 +4533,8 @@ again: &fs_info->fs_devices->resized_devices); WARN_ON(diff > old_total); - btrfs_set_super_total_bytes(super_copy, old_total - diff); + btrfs_set_super_total_bytes(super_copy, + round_down(old_total - diff, fs_info->sectorsize)); mutex_unlock(&fs_info->chunk_mutex); /* Now btrfs_update_device() will change the on-disk size. */ @@ -4535,9 +4547,7 @@ done: btrfs_device_set_total_bytes(device, old_size); if (device->writeable) device->fs_devices->total_rw_bytes += diff; - spin_lock(&fs_info->free_chunk_lock); - fs_info->free_chunk_space += diff; - spin_unlock(&fs_info->free_chunk_lock); + atomic64_add(diff, &fs_info->free_chunk_space); mutex_unlock(&fs_info->chunk_mutex); } return ret; @@ -4882,9 +4892,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, btrfs_device_set_bytes_used(map->stripes[i].dev, num_bytes); } - spin_lock(&info->free_chunk_lock); - info->free_chunk_space -= (stripe_size * map->num_stripes); - spin_unlock(&info->free_chunk_lock); + atomic64_sub(stripe_size * map->num_stripes, &info->free_chunk_space); free_extent_map(em); check_raid56_incompat_flag(info, type); @@ -5029,20 +5037,19 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, static noinline int init_first_rw_device(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info) { - struct btrfs_root *extent_root = fs_info->extent_root; u64 chunk_offset; u64 sys_chunk_offset; u64 alloc_profile; int ret; chunk_offset = find_next_chunk(fs_info); - alloc_profile = btrfs_get_alloc_profile(extent_root, 0); + alloc_profile = btrfs_metadata_alloc_profile(fs_info); ret = __btrfs_alloc_chunk(trans, chunk_offset, alloc_profile); if (ret) return ret; sys_chunk_offset = find_next_chunk(fs_info); - alloc_profile = btrfs_get_alloc_profile(fs_info->chunk_root, 0); + alloc_profile = btrfs_system_alloc_profile(fs_info); ret = __btrfs_alloc_chunk(trans, sys_chunk_offset, alloc_profile); return ret; } @@ -6267,10 +6274,9 @@ int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, continue; } - if (dev_nr < total_devs - 1) { - bio = btrfs_bio_clone(first_bio, GFP_NOFS); - BUG_ON(!bio); /* -ENOMEM */ - } else + if (dev_nr < total_devs - 1) + bio = btrfs_bio_clone(first_bio); + else bio = first_bio; submit_stripe_bio(bbio, bio, bbio->stripes[dev_nr].physical, @@ -6685,10 +6691,8 @@ static int read_one_dev(struct btrfs_fs_info *fs_info, device->in_fs_metadata = 1; if (device->writeable && !device->is_tgtdev_for_dev_replace) { device->fs_devices->total_rw_bytes += device->total_bytes; - spin_lock(&fs_info->free_chunk_lock); - fs_info->free_chunk_space += device->total_bytes - - device->bytes_used; - spin_unlock(&fs_info->free_chunk_lock); + atomic64_add(device->total_bytes - device->bytes_used, + &fs_info->free_chunk_space); } ret = 0; return ret; diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index c7d0fbc915ca..6f45fd60d15a 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -74,6 +74,8 @@ struct btrfs_device { int missing; int can_discard; int is_tgtdev_for_dev_replace; + int last_flush_error; + int flush_bio_sent; #ifdef __BTRFS_NEED_DEVICE_DATA_ORDERED seqcount_t data_seqcount; @@ -279,6 +281,11 @@ struct btrfs_io_bio { u8 csum_inline[BTRFS_BIO_INLINE_CSUM_SIZE]; u8 *csum_allocated; btrfs_io_bio_end_io_t *end_io; + struct bvec_iter iter; + /* + * This member must come last, bio_alloc_bioset will allocate enough + * bytes for entire btrfs_io_bio but relies on bio being last. + */ struct bio bio; }; diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c index b3cbf80c5acf..2c7e53f9ff1b 100644 --- a/fs/btrfs/xattr.c +++ b/fs/btrfs/xattr.c @@ -336,7 +336,7 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size) u32 this_len = sizeof(*di) + name_len + data_len; unsigned long name_ptr = (unsigned long)(di + 1); - if (verify_dir_item(fs_info, leaf, di)) { + if (verify_dir_item(fs_info, leaf, slot, di)) { ret = -EIO; goto err; } diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index 135b10823c6d..c248f9286366 100644 --- a/fs/btrfs/zlib.c +++ b/fs/btrfs/zlib.c @@ -24,12 +24,13 @@ #include <linux/slab.h> #include <linux/zlib.h> #include <linux/zutil.h> -#include <linux/vmalloc.h> +#include <linux/mm.h> #include <linux/init.h> #include <linux/err.h> #include <linux/sched.h> #include <linux/pagemap.h> #include <linux/bio.h> +#include <linux/refcount.h> #include "compression.h" struct workspace { @@ -42,7 +43,7 @@ static void zlib_free_workspace(struct list_head *ws) { struct workspace *workspace = list_entry(ws, struct workspace, list); - vfree(workspace->strm.workspace); + kvfree(workspace->strm.workspace); kfree(workspace->buf); kfree(workspace); } @@ -52,14 +53,14 @@ static struct list_head *zlib_alloc_workspace(void) struct workspace *workspace; int workspacesize; - workspace = kzalloc(sizeof(*workspace), GFP_NOFS); + workspace = kzalloc(sizeof(*workspace), GFP_KERNEL); if (!workspace) return ERR_PTR(-ENOMEM); workspacesize = max(zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL), zlib_inflate_workspacesize()); - workspace->strm.workspace = vmalloc(workspacesize); - workspace->buf = kmalloc(PAGE_SIZE, GFP_NOFS); + workspace->strm.workspace = kvmalloc(workspacesize, GFP_KERNEL); + workspace->buf = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!workspace->strm.workspace || !workspace->buf) goto fail; @@ -211,10 +212,7 @@ out: return ret; } -static int zlib_decompress_bio(struct list_head *ws, struct page **pages_in, - u64 disk_start, - struct bio *orig_bio, - size_t srclen) +static int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb) { struct workspace *workspace = list_entry(ws, struct workspace, list); int ret = 0, ret2; @@ -222,8 +220,12 @@ static int zlib_decompress_bio(struct list_head *ws, struct page **pages_in, char *data_in; size_t total_out = 0; unsigned long page_in_index = 0; + size_t srclen = cb->compressed_len; unsigned long total_pages_in = DIV_ROUND_UP(srclen, PAGE_SIZE); unsigned long buf_start; + struct page **pages_in = cb->compressed_pages; + u64 disk_start = cb->start; + struct bio *orig_bio = cb->orig_bio; data_in = kmap(pages_in[page_in_index]); workspace->strm.next_in = data_in; diff --git a/fs/coda/file.c b/fs/coda/file.c index 9d956cd6d46f..363402fcb3ed 100644 --- a/fs/coda/file.c +++ b/fs/coda/file.c @@ -34,7 +34,7 @@ coda_file_read_iter(struct kiocb *iocb, struct iov_iter *to) BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC); - return vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos); + return vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos, 0); } static ssize_t @@ -51,7 +51,7 @@ coda_file_write_iter(struct kiocb *iocb, struct iov_iter *to) host_file = cfi->cfi_container; file_start_write(host_file); inode_lock(coda_inode); - ret = vfs_iter_write(cfi->cfi_container, to, &iocb->ki_pos); + ret = vfs_iter_write(cfi->cfi_container, to, &iocb->ki_pos, 0); coda_inode->i_size = file_inode(host_file)->i_size; coda_inode->i_blocks = (coda_inode->i_size + 511) >> 9; coda_inode->i_mtime = coda_inode->i_ctime = current_time(coda_inode); diff --git a/fs/fcntl.c b/fs/fcntl.c index ed051f825bad..b6bd89628025 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -109,20 +109,34 @@ void __f_setown(struct file *filp, struct pid *pid, enum pid_type type, } EXPORT_SYMBOL(__f_setown); -void f_setown(struct file *filp, unsigned long arg, int force) +int f_setown(struct file *filp, unsigned long arg, int force) { enum pid_type type; - struct pid *pid; - int who = arg; + struct pid *pid = NULL; + int who = arg, ret = 0; + type = PIDTYPE_PID; if (who < 0) { + /* avoid overflow below */ + if (who == INT_MIN) + return -EINVAL; + type = PIDTYPE_PGID; who = -who; } + rcu_read_lock(); - pid = find_vpid(who); - __f_setown(filp, pid, type, force); + if (who) { + pid = find_vpid(who); + if (!pid) + ret = -ESRCH; + } + + if (!ret) + __f_setown(filp, pid, type, force); rcu_read_unlock(); + + return ret; } EXPORT_SYMBOL(f_setown); @@ -307,6 +321,8 @@ static long fcntl_rw_hint(struct file *file, unsigned int cmd, static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, struct file *filp) { + void __user *argp = (void __user *)arg; + struct flock flock; long err = -EINVAL; switch (cmd) { @@ -334,7 +350,11 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, case F_OFD_GETLK: #endif case F_GETLK: - err = fcntl_getlk(filp, cmd, (struct flock __user *) arg); + if (copy_from_user(&flock, argp, sizeof(flock))) + return -EFAULT; + err = fcntl_getlk(filp, cmd, &flock); + if (!err && copy_to_user(argp, &flock, sizeof(flock))) + return -EFAULT; break; #if BITS_PER_LONG != 32 /* 32-bit arches must use fcntl64() */ @@ -344,7 +364,9 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, /* Fallthrough */ case F_SETLK: case F_SETLKW: - err = fcntl_setlk(fd, filp, cmd, (struct flock __user *) arg); + if (copy_from_user(&flock, argp, sizeof(flock))) + return -EFAULT; + err = fcntl_setlk(fd, filp, cmd, &flock); break; case F_GETOWN: /* @@ -358,8 +380,7 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, force_successful_syscall_return(); break; case F_SETOWN: - f_setown(filp, arg, 1); - err = 0; + err = f_setown(filp, arg, 1); break; case F_GETOWN_EX: err = f_getown_ex(filp, arg); @@ -450,7 +471,9 @@ out: SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, unsigned long, arg) { + void __user *argp = (void __user *)arg; struct fd f = fdget_raw(fd); + struct flock64 flock; long err = -EBADF; if (!f.file) @@ -468,14 +491,21 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, switch (cmd) { case F_GETLK64: case F_OFD_GETLK: - err = fcntl_getlk64(f.file, cmd, (struct flock64 __user *) arg); + err = -EFAULT; + if (copy_from_user(&flock, argp, sizeof(flock))) + break; + err = fcntl_getlk64(f.file, cmd, &flock); + if (!err && copy_to_user(argp, &flock, sizeof(flock))) + err = -EFAULT; break; case F_SETLK64: case F_SETLKW64: case F_OFD_SETLK: case F_OFD_SETLKW: - err = fcntl_setlk64(fd, f.file, cmd, - (struct flock64 __user *) arg); + err = -EFAULT; + if (copy_from_user(&flock, argp, sizeof(flock))) + break; + err = fcntl_setlk64(fd, f.file, cmd, &flock); break; default: err = do_fcntl(fd, cmd, arg, f.file); @@ -489,57 +519,56 @@ out: #endif #ifdef CONFIG_COMPAT +/* careful - don't use anywhere else */ +#define copy_flock_fields(from, to) \ + (to).l_type = (from).l_type; \ + (to).l_whence = (from).l_whence; \ + (to).l_start = (from).l_start; \ + (to).l_len = (from).l_len; \ + (to).l_pid = (from).l_pid; + static int get_compat_flock(struct flock *kfl, struct compat_flock __user *ufl) { - if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) || - __get_user(kfl->l_type, &ufl->l_type) || - __get_user(kfl->l_whence, &ufl->l_whence) || - __get_user(kfl->l_start, &ufl->l_start) || - __get_user(kfl->l_len, &ufl->l_len) || - __get_user(kfl->l_pid, &ufl->l_pid)) + struct compat_flock fl; + + if (copy_from_user(&fl, ufl, sizeof(struct compat_flock))) return -EFAULT; + copy_flock_fields(*kfl, fl); return 0; } -static int put_compat_flock(struct flock *kfl, struct compat_flock __user *ufl) +static int get_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl) { - if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) || - __put_user(kfl->l_type, &ufl->l_type) || - __put_user(kfl->l_whence, &ufl->l_whence) || - __put_user(kfl->l_start, &ufl->l_start) || - __put_user(kfl->l_len, &ufl->l_len) || - __put_user(kfl->l_pid, &ufl->l_pid)) + struct compat_flock64 fl; + + if (copy_from_user(&fl, ufl, sizeof(struct compat_flock64))) return -EFAULT; + copy_flock_fields(*kfl, fl); return 0; } -#ifndef HAVE_ARCH_GET_COMPAT_FLOCK64 -static int get_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl) +static int put_compat_flock(struct flock *kfl, struct compat_flock __user *ufl) { - if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) || - __get_user(kfl->l_type, &ufl->l_type) || - __get_user(kfl->l_whence, &ufl->l_whence) || - __get_user(kfl->l_start, &ufl->l_start) || - __get_user(kfl->l_len, &ufl->l_len) || - __get_user(kfl->l_pid, &ufl->l_pid)) + struct compat_flock fl; + + memset(&fl, 0, sizeof(struct compat_flock)); + copy_flock_fields(fl, *kfl); + if (copy_to_user(ufl, &fl, sizeof(struct compat_flock))) return -EFAULT; return 0; } -#endif -#ifndef HAVE_ARCH_PUT_COMPAT_FLOCK64 static int put_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl) { - if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) || - __put_user(kfl->l_type, &ufl->l_type) || - __put_user(kfl->l_whence, &ufl->l_whence) || - __put_user(kfl->l_start, &ufl->l_start) || - __put_user(kfl->l_len, &ufl->l_len) || - __put_user(kfl->l_pid, &ufl->l_pid)) + struct compat_flock64 fl; + + memset(&fl, 0, sizeof(struct compat_flock64)); + copy_flock_fields(fl, *kfl); + if (copy_to_user(ufl, &fl, sizeof(struct compat_flock64))) return -EFAULT; return 0; } -#endif +#undef copy_flock_fields static unsigned int convert_fcntl_cmd(unsigned int cmd) @@ -556,76 +585,92 @@ convert_fcntl_cmd(unsigned int cmd) return cmd; } +/* + * GETLK was successful and we need to return the data, but it needs to fit in + * the compat structure. + * l_start shouldn't be too big, unless the original start + end is greater than + * COMPAT_OFF_T_MAX, in which case the app was asking for trouble, so we return + * -EOVERFLOW in that case. l_len could be too big, in which case we just + * truncate it, and only allow the app to see that part of the conflicting lock + * that might make sense to it anyway + */ +static int fixup_compat_flock(struct flock *flock) +{ + if (flock->l_start > COMPAT_OFF_T_MAX) + return -EOVERFLOW; + if (flock->l_len > COMPAT_OFF_T_MAX) + flock->l_len = COMPAT_OFF_T_MAX; + return 0; +} + COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, compat_ulong_t, arg) { - mm_segment_t old_fs; - struct flock f; - long ret; - unsigned int conv_cmd; + struct fd f = fdget_raw(fd); + struct flock flock; + long err = -EBADF; + + if (!f.file) + return err; + + if (unlikely(f.file->f_mode & FMODE_PATH)) { + if (!check_fcntl_cmd(cmd)) + goto out_put; + } + + err = security_file_fcntl(f.file, cmd, arg); + if (err) + goto out_put; switch (cmd) { case F_GETLK: + err = get_compat_flock(&flock, compat_ptr(arg)); + if (err) + break; + err = fcntl_getlk(f.file, convert_fcntl_cmd(cmd), &flock); + if (err) + break; + err = fixup_compat_flock(&flock); + if (err) + return err; + err = put_compat_flock(&flock, compat_ptr(arg)); + break; + case F_GETLK64: + case F_OFD_GETLK: + err = get_compat_flock64(&flock, compat_ptr(arg)); + if (err) + break; + err = fcntl_getlk(f.file, convert_fcntl_cmd(cmd), &flock); + if (err) + break; + err = fixup_compat_flock(&flock); + if (err) + return err; + err = put_compat_flock64(&flock, compat_ptr(arg)); + break; case F_SETLK: case F_SETLKW: - ret = get_compat_flock(&f, compat_ptr(arg)); - if (ret != 0) + err = get_compat_flock(&flock, compat_ptr(arg)); + if (err) break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_fcntl(fd, cmd, (unsigned long)&f); - set_fs(old_fs); - if (cmd == F_GETLK && ret == 0) { - /* GETLK was successful and we need to return the data... - * but it needs to fit in the compat structure. - * l_start shouldn't be too big, unless the original - * start + end is greater than COMPAT_OFF_T_MAX, in which - * case the app was asking for trouble, so we return - * -EOVERFLOW in that case. - * l_len could be too big, in which case we just truncate it, - * and only allow the app to see that part of the conflicting - * lock that might make sense to it anyway - */ - - if (f.l_start > COMPAT_OFF_T_MAX) - ret = -EOVERFLOW; - if (f.l_len > COMPAT_OFF_T_MAX) - f.l_len = COMPAT_OFF_T_MAX; - if (ret == 0) - ret = put_compat_flock(&f, compat_ptr(arg)); - } + err = fcntl_setlk(fd, f.file, convert_fcntl_cmd(cmd), &flock); break; - - case F_GETLK64: case F_SETLK64: case F_SETLKW64: - case F_OFD_GETLK: case F_OFD_SETLK: case F_OFD_SETLKW: - ret = get_compat_flock64(&f, compat_ptr(arg)); - if (ret != 0) + err = get_compat_flock64(&flock, compat_ptr(arg)); + if (err) break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - conv_cmd = convert_fcntl_cmd(cmd); - ret = sys_fcntl(fd, conv_cmd, (unsigned long)&f); - set_fs(old_fs); - if ((conv_cmd == F_GETLK || conv_cmd == F_OFD_GETLK) && ret == 0) { - /* need to return lock information - see above for commentary */ - if (f.l_start > COMPAT_LOFF_T_MAX) - ret = -EOVERFLOW; - if (f.l_len > COMPAT_LOFF_T_MAX) - f.l_len = COMPAT_LOFF_T_MAX; - if (ret == 0) - ret = put_compat_flock64(&f, compat_ptr(arg)); - } + err = fcntl_setlk(fd, f.file, convert_fcntl_cmd(cmd), &flock); break; - default: - ret = sys_fcntl(fd, cmd, arg); + err = do_fcntl(fd, cmd, arg, f.file); break; } - return ret; +out_put: + fdput(f); + return err; } COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 4d810be532dd..9fa3aef9a5b3 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -970,7 +970,7 @@ more_rgrps: continue; bn = be64_to_cpu(*p); if (gfs2_holder_initialized(rd_gh)) { - rgd = (struct gfs2_rgrpd *)rd_gh->gh_gl->gl_object; + rgd = gfs2_glock2rgrp(rd_gh->gh_gl); gfs2_assert_withdraw(sdp, gfs2_glock_is_locked_by_me(rd_gh->gh_gl)); } else { diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 79113219be5f..db427658ccd9 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1444,7 +1444,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, struct dir_context *ctx, "g.offset (%u)\n", (unsigned long long)bh->b_blocknr, entries2, g.offset); - + gfs2_consist_inode(ip); error = -EIO; goto out_free; } @@ -1612,6 +1612,7 @@ int gfs2_dir_read(struct inode *inode, struct dir_context *ctx, (unsigned long long)dip->i_no_addr, dip->i_entries, g.offset); + gfs2_consist_inode(dip); error = -EIO; goto out; } @@ -2031,8 +2032,8 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len, gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE); for (x = 0; x < rlist.rl_rgrps; x++) { - struct gfs2_rgrpd *rgd; - rgd = rlist.rl_ghs[x].gh_gl->gl_object; + struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(rlist.rl_ghs[x].gh_gl); + rg_blocks += rgd->rd_length; } diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 959a19ced4d5..6cd71c50b8bd 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -152,20 +152,34 @@ static void gfs2_glock_remove_from_lru(struct gfs2_glock *gl) spin_unlock(&lru_lock); } -/** - * gfs2_glock_put() - Decrement reference count on glock - * @gl: The glock to put - * +/* + * Enqueue the glock on the work queue. Passes one glock reference on to the + * work queue. */ +static void __gfs2_glock_queue_work(struct gfs2_glock *gl, unsigned long delay) { + if (!queue_delayed_work(glock_workqueue, &gl->gl_work, delay)) { + /* + * We are holding the lockref spinlock, and the work was still + * queued above. The queued work (glock_work_func) takes that + * spinlock before dropping its glock reference(s), so it + * cannot have dropped them in the meantime. + */ + GLOCK_BUG_ON(gl, gl->gl_lockref.count < 2); + gl->gl_lockref.count--; + } +} -void gfs2_glock_put(struct gfs2_glock *gl) +static void gfs2_glock_queue_work(struct gfs2_glock *gl, unsigned long delay) { + spin_lock(&gl->gl_lockref.lock); + __gfs2_glock_queue_work(gl, delay); + spin_unlock(&gl->gl_lockref.lock); +} + +static void __gfs2_glock_put(struct gfs2_glock *gl) { struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; struct address_space *mapping = gfs2_glock2aspace(gl); - if (lockref_put_or_lock(&gl->gl_lockref)) - return; - lockref_mark_dead(&gl->gl_lockref); gfs2_glock_remove_from_lru(gl); @@ -178,6 +192,20 @@ void gfs2_glock_put(struct gfs2_glock *gl) } /** + * gfs2_glock_put() - Decrement reference count on glock + * @gl: The glock to put + * + */ + +void gfs2_glock_put(struct gfs2_glock *gl) +{ + if (lockref_put_or_lock(&gl->gl_lockref)) + return; + + __gfs2_glock_put(gl); +} + +/** * may_grant - check if its ok to grant a new lock * @gl: The glock * @gh: The lock request which we wish to grant @@ -482,8 +510,7 @@ __acquires(&gl->gl_lockref.lock) target == LM_ST_UNLOCKED && test_bit(SDF_SKIP_DLM_UNLOCK, &sdp->sd_flags)) { finish_xmote(gl, target); - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) - gfs2_glock_put(gl); + gfs2_glock_queue_work(gl, 0); } else if (ret) { pr_err("lm_lock ret %d\n", ret); @@ -492,8 +519,7 @@ __acquires(&gl->gl_lockref.lock) } } else { /* lock_nolock */ finish_xmote(gl, target); - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) - gfs2_glock_put(gl); + gfs2_glock_queue_work(gl, 0); } spin_lock(&gl->gl_lockref.lock); @@ -565,8 +591,7 @@ out_sched: clear_bit(GLF_LOCK, &gl->gl_flags); smp_mb__after_atomic(); gl->gl_lockref.count++; - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) - gl->gl_lockref.count--; + __gfs2_glock_queue_work(gl, 0); return; out_unlock: @@ -601,11 +626,11 @@ static void glock_work_func(struct work_struct *work) { unsigned long delay = 0; struct gfs2_glock *gl = container_of(work, struct gfs2_glock, gl_work.work); - int drop_ref = 0; + unsigned int drop_refs = 1; if (test_and_clear_bit(GLF_REPLY_PENDING, &gl->gl_flags)) { finish_xmote(gl, gl->gl_reply); - drop_ref = 1; + drop_refs++; } spin_lock(&gl->gl_lockref.lock); if (test_bit(GLF_PENDING_DEMOTE, &gl->gl_flags) && @@ -623,17 +648,25 @@ static void glock_work_func(struct work_struct *work) } } run_queue(gl, 0); - spin_unlock(&gl->gl_lockref.lock); - if (!delay) - gfs2_glock_put(gl); - else { + if (delay) { + /* Keep one glock reference for the work we requeue. */ + drop_refs--; if (gl->gl_name.ln_type != LM_TYPE_INODE) delay = 0; - if (queue_delayed_work(glock_workqueue, &gl->gl_work, delay) == 0) - gfs2_glock_put(gl); + __gfs2_glock_queue_work(gl, delay); } - if (drop_ref) - gfs2_glock_put(gl); + + /* + * Drop the remaining glock references manually here. (Mind that + * __gfs2_glock_queue_work depends on the lockref spinlock begin held + * here as well.) + */ + gl->gl_lockref.count -= drop_refs; + if (!gl->gl_lockref.count) { + __gfs2_glock_put(gl); + return; + } + spin_unlock(&gl->gl_lockref.lock); } /** @@ -986,8 +1019,7 @@ int gfs2_glock_nq(struct gfs2_holder *gh) test_and_clear_bit(GLF_FROZEN, &gl->gl_flags))) { set_bit(GLF_REPLY_PENDING, &gl->gl_flags); gl->gl_lockref.count++; - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) - gl->gl_lockref.count--; + __gfs2_glock_queue_work(gl, 0); } run_queue(gl, 1); spin_unlock(&gl->gl_lockref.lock); @@ -1047,17 +1079,15 @@ void gfs2_glock_dq(struct gfs2_holder *gh) gfs2_glock_add_to_lru(gl); trace_gfs2_glock_queue(gh, 0); + if (unlikely(!fast_path)) { + gl->gl_lockref.count++; + if (test_bit(GLF_PENDING_DEMOTE, &gl->gl_flags) && + !test_bit(GLF_DEMOTE, &gl->gl_flags) && + gl->gl_name.ln_type == LM_TYPE_INODE) + delay = gl->gl_hold_time; + __gfs2_glock_queue_work(gl, delay); + } spin_unlock(&gl->gl_lockref.lock); - if (likely(fast_path)) - return; - - gfs2_glock_hold(gl); - if (test_bit(GLF_PENDING_DEMOTE, &gl->gl_flags) && - !test_bit(GLF_DEMOTE, &gl->gl_flags) && - gl->gl_name.ln_type == LM_TYPE_INODE) - delay = gl->gl_hold_time; - if (queue_delayed_work(glock_workqueue, &gl->gl_work, delay) == 0) - gfs2_glock_put(gl); } void gfs2_glock_dq_wait(struct gfs2_holder *gh) @@ -1233,9 +1263,8 @@ void gfs2_glock_cb(struct gfs2_glock *gl, unsigned int state) spin_lock(&gl->gl_lockref.lock); handle_callback(gl, state, delay, true); + __gfs2_glock_queue_work(gl, delay); spin_unlock(&gl->gl_lockref.lock); - if (queue_delayed_work(glock_workqueue, &gl->gl_work, delay) == 0) - gfs2_glock_put(gl); } /** @@ -1294,10 +1323,8 @@ void gfs2_glock_complete(struct gfs2_glock *gl, int ret) gl->gl_lockref.count++; set_bit(GLF_REPLY_PENDING, &gl->gl_flags); + __gfs2_glock_queue_work(gl, 0); spin_unlock(&gl->gl_lockref.lock); - - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) - gfs2_glock_put(gl); } static int glock_cmp(void *priv, struct list_head *a, struct list_head *b) @@ -1355,8 +1382,7 @@ add_back_to_lru: if (demote_ok(gl)) handle_callback(gl, LM_ST_UNLOCKED, 0, false); WARN_ON(!test_and_clear_bit(GLF_LOCK, &gl->gl_flags)); - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) - gl->gl_lockref.count--; + __gfs2_glock_queue_work(gl, 0); spin_unlock(&gl->gl_lockref.lock); cond_resched_lock(&lru_lock); } @@ -1462,13 +1488,12 @@ static void glock_hash_walk(glock_examiner examiner, const struct gfs2_sbd *sdp) static void thaw_glock(struct gfs2_glock *gl) { - if (!test_and_clear_bit(GLF_FROZEN, &gl->gl_flags)) - goto out; - set_bit(GLF_REPLY_PENDING, &gl->gl_flags); - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) { -out: + if (!test_and_clear_bit(GLF_FROZEN, &gl->gl_flags)) { gfs2_glock_put(gl); + return; } + set_bit(GLF_REPLY_PENDING, &gl->gl_flags); + gfs2_glock_queue_work(gl, 0); } /** @@ -1484,9 +1509,8 @@ static void clear_glock(struct gfs2_glock *gl) spin_lock(&gl->gl_lockref.lock); if (gl->gl_state != LM_ST_UNLOCKED) handle_callback(gl, LM_ST_UNLOCKED, 0, false); + __gfs2_glock_queue_work(gl, 0); spin_unlock(&gl->gl_lockref.lock); - if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) - gfs2_glock_put(gl); } /** diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index ab1ef322f7a5..9ad4a6ac6c84 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -257,4 +257,11 @@ static inline bool gfs2_holder_initialized(struct gfs2_holder *gh) return gh->gh_gl; } +static inline void glock_set_object(struct gfs2_glock *gl, void *object) +{ + spin_lock(&gl->gl_lockref.lock); + gl->gl_object = object; + spin_unlock(&gl->gl_lockref.lock); +} + #endif /* __GLOCK_DOT_H__ */ diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 5db59d444838..5e69636d4dd3 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -137,7 +137,7 @@ void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) * * Called when demoting or unlocking an EX glock. We must flush * to disk all dirty buffers/pages relating to this glock, and must not - * not return to caller to demote/unlock the glock until I/O is complete. + * return to caller to demote/unlock the glock until I/O is complete. */ static void rgrp_go_sync(struct gfs2_glock *gl) @@ -184,7 +184,7 @@ static void rgrp_go_inval(struct gfs2_glock *gl, int flags) { struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; struct address_space *mapping = &sdp->sd_aspace; - struct gfs2_rgrpd *rgd = gl->gl_object; + struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); if (rgd) gfs2_rgrp_brelse(rgd); @@ -197,6 +197,38 @@ static void rgrp_go_inval(struct gfs2_glock *gl, int flags) rgd->rd_flags &= ~GFS2_RDF_UPTODATE; } +static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl) +{ + struct gfs2_inode *ip; + + spin_lock(&gl->gl_lockref.lock); + ip = gl->gl_object; + if (ip) + set_bit(GIF_GLOP_PENDING, &ip->i_flags); + spin_unlock(&gl->gl_lockref.lock); + return ip; +} + +struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl) +{ + struct gfs2_rgrpd *rgd; + + spin_lock(&gl->gl_lockref.lock); + rgd = gl->gl_object; + spin_unlock(&gl->gl_lockref.lock); + + return rgd; +} + +static void gfs2_clear_glop_pending(struct gfs2_inode *ip) +{ + if (!ip) + return; + + clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags); + wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING); +} + /** * inode_go_sync - Sync the dirty data and/or metadata for an inode glock * @gl: the glock protecting the inode @@ -205,25 +237,24 @@ static void rgrp_go_inval(struct gfs2_glock *gl, int flags) static void inode_go_sync(struct gfs2_glock *gl) { - struct gfs2_inode *ip = gl->gl_object; + struct gfs2_inode *ip = gfs2_glock2inode(gl); + int isreg = ip && S_ISREG(ip->i_inode.i_mode); struct address_space *metamapping = gfs2_glock2aspace(gl); int error; - if (ip && !S_ISREG(ip->i_inode.i_mode)) - ip = NULL; - if (ip) { + if (isreg) { if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); inode_dio_wait(&ip->i_inode); } if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) - return; + goto out; GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH); filemap_fdatawrite(metamapping); - if (ip) { + if (isreg) { struct address_space *mapping = ip->i_inode.i_mapping; filemap_fdatawrite(mapping); error = filemap_fdatawait(mapping); @@ -238,6 +269,9 @@ static void inode_go_sync(struct gfs2_glock *gl) */ smp_mb__before_atomic(); clear_bit(GLF_DIRTY, &gl->gl_flags); + +out: + gfs2_clear_glop_pending(ip); } /** @@ -253,7 +287,7 @@ static void inode_go_sync(struct gfs2_glock *gl) static void inode_go_inval(struct gfs2_glock *gl, int flags) { - struct gfs2_inode *ip = gl->gl_object; + struct gfs2_inode *ip = gfs2_glock2inode(gl); gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count)); @@ -274,6 +308,8 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags) } if (ip && S_ISREG(ip->i_inode.i_mode)) truncate_inode_pages(ip->i_inode.i_mapping, 0); + + gfs2_clear_glop_pending(ip); } /** @@ -541,7 +577,7 @@ static int freeze_go_demote_ok(const struct gfs2_glock *gl) */ static void iopen_go_callback(struct gfs2_glock *gl, bool remote) { - struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; + struct gfs2_inode *ip = gl->gl_object; struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY)) diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index aa3d44527fa2..790e73984288 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -336,7 +336,6 @@ enum { }; struct gfs2_glock { - struct hlist_bl_node gl_list; unsigned long gl_flags; /* GLF_... */ struct lm_lockname gl_name; @@ -386,6 +385,7 @@ enum { GIF_SW_PAGED = 3, GIF_ORDERED = 4, GIF_FREE_VFS_INODE = 5, + GIF_GLOP_PENDING = 6, }; struct gfs2_inode { @@ -820,7 +820,6 @@ struct gfs2_sbd { wait_queue_head_t sd_reserving_log_wait; unsigned int sd_log_flush_head; - u64 sd_log_flush_wrapped; spinlock_t sd_ail_lock; struct list_head sd_ail1_list; @@ -857,5 +856,7 @@ static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) preempt_enable(); } +extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl); + #endif /* __INCORE_DOT_H__ */ diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 9f605ea4810c..acca501f8110 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -144,7 +144,8 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, error = gfs2_glock_get(sdp, no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); if (unlikely(error)) goto fail; - ip->i_gl->gl_object = ip; + flush_delayed_work(&ip->i_gl->gl_work); + glock_set_object(ip->i_gl, ip); error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl); if (unlikely(error)) @@ -173,8 +174,8 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); if (unlikely(error)) goto fail_put; - - ip->i_iopen_gh.gh_gl->gl_object = ip; + flush_delayed_work(&ip->i_iopen_gh.gh_gl->gl_work); + glock_set_object(ip->i_iopen_gh.gh_gl, ip); gfs2_glock_put(io_gl); io_gl = NULL; @@ -201,14 +202,14 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, fail_refresh: ip->i_iopen_gh.gh_flags |= GL_NOCACHE; - ip->i_iopen_gh.gh_gl->gl_object = NULL; + glock_set_object(ip->i_iopen_gh.gh_gl, NULL); gfs2_glock_dq_uninit(&ip->i_iopen_gh); fail_put: if (io_gl) gfs2_glock_put(io_gl); if (gfs2_holder_initialized(&i_gh)) gfs2_glock_dq_uninit(&i_gh); - ip->i_gl->gl_object = NULL; + glock_set_object(ip->i_gl, NULL); fail: iget_failed(inode); return ERR_PTR(error); @@ -607,6 +608,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); if (error) goto fail; + gfs2_holder_mark_uninitialized(ghs + 1); error = create_ok(dip, name, mode); if (error) @@ -705,7 +707,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, if (error) goto fail_free_inode; - ip->i_gl->gl_object = ip; + glock_set_object(ip->i_gl, ip); error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); if (error) goto fail_free_inode; @@ -731,7 +733,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, if (error) goto fail_gunlock2; - ip->i_iopen_gh.gh_gl->gl_object = ip; + glock_set_object(ip->i_iopen_gh.gh_gl, ip); gfs2_glock_put(io_gl); gfs2_set_iop(inode); insert_inode_hash(inode); @@ -778,7 +780,6 @@ fail_gunlock3: fail_gunlock2: if (io_gl) clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); - gfs2_glock_dq_uninit(ghs + 1); fail_free_inode: if (ip->i_gl) gfs2_glock_put(ip->i_gl); @@ -799,6 +800,8 @@ fail_gunlock: &GFS2_I(inode)->i_flags); iput(inode); } + if (gfs2_holder_initialized(ghs + 1)) + gfs2_glock_dq_uninit(ghs + 1); fail: return error; } diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index d2955daf17a4..9a624f694400 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -722,7 +722,6 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); sdp->sd_log_flush_head = sdp->sd_log_head; - sdp->sd_log_flush_wrapped = 0; tr = sdp->sd_log_tr; if (tr) { sdp->sd_log_tr = NULL; @@ -775,7 +774,6 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, } atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */ trace_gfs2_log_blocks(sdp, -1); - sdp->sd_log_flush_wrapped = 0; log_write_header(sdp, 0); sdp->sd_log_head = sdp->sd_log_flush_head; } @@ -880,7 +878,6 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp) gfs2_assert_withdraw(sdp, list_empty(&sdp->sd_ail1_list)); sdp->sd_log_flush_head = sdp->sd_log_head; - sdp->sd_log_flush_wrapped = 0; log_write_header(sdp, GFS2_LOG_HEAD_UNMOUNT); diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 885d36e7a29f..e5259cd92ea4 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -71,7 +71,7 @@ static void maybe_release_space(struct gfs2_bufdata *bd) { struct gfs2_glock *gl = bd->bd_gl; struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; - struct gfs2_rgrpd *rgd = gl->gl_object; + struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; struct gfs2_bitmap *bi = rgd->rd_bits + index; @@ -134,10 +134,8 @@ static void gfs2_log_incr_head(struct gfs2_sbd *sdp) BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && (sdp->sd_log_flush_head != sdp->sd_log_head)); - if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) { + if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) sdp->sd_log_flush_head = 0; - sdp->sd_log_flush_wrapped = 1; - } } static u64 gfs2_log_bmap(struct gfs2_sbd *sdp) diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c index 67d1fc4668f7..0a89e6f7a314 100644 --- a/fs/gfs2/main.c +++ b/fs/gfs2/main.c @@ -52,7 +52,6 @@ static void gfs2_init_glock_once(void *foo) { struct gfs2_glock *gl = foo; - INIT_HLIST_BL_NODE(&gl->gl_list); spin_lock_init(&gl->gl_lockref.lock); INIT_LIST_HEAD(&gl->gl_holders); INIT_LIST_HEAD(&gl->gl_lru); diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 83c9909ff14a..836e38ba5d0a 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -705,9 +705,7 @@ void gfs2_clear_rgrpd(struct gfs2_sbd *sdp) rb_erase(n, &sdp->sd_rindex_tree); if (gl) { - spin_lock(&gl->gl_lockref.lock); - gl->gl_object = NULL; - spin_unlock(&gl->gl_lockref.lock); + glock_set_object(gl, NULL); gfs2_glock_add_to_lru(gl); gfs2_glock_put(gl); } @@ -917,7 +915,7 @@ static int read_rindex_entry(struct gfs2_inode *ip) error = rgd_insert(rgd); spin_unlock(&sdp->sd_rindex_spin); if (!error) { - rgd->rd_gl->gl_object = rgd; + glock_set_object(rgd->rd_gl, rgd); rgd->rd_gl->gl_vm.start = (rgd->rd_addr * bsize) & PAGE_MASK; rgd->rd_gl->gl_vm.end = PAGE_ALIGN((rgd->rd_addr + rgd->rd_length) * bsize) - 1; diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 29b0473f6e74..fdedec379b78 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1105,9 +1105,12 @@ static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host gfs2_holder_uninit(gh); error = err; } else { - if (!error) - error = statfs_slow_fill( - gh->gh_gl->gl_object, sc); + if (!error) { + struct gfs2_rgrpd *rgd = + gfs2_glock2rgrp(gh->gh_gl); + + error = statfs_slow_fill(rgd, sc); + } gfs2_glock_dq_uninit(gh); } } @@ -1535,6 +1538,12 @@ static void gfs2_evict_inode(struct inode *inode) if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) goto out; + if (test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { + BUG_ON(!gfs2_glock_is_locked_by_me(ip->i_gl)); + gfs2_holder_mark_uninitialized(&gh); + goto alloc_failed; + } + /* Must not read inode block until block type has been verified */ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); if (unlikely(error)) { @@ -1543,11 +1552,9 @@ static void gfs2_evict_inode(struct inode *inode) goto out; } - if (!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { - error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); - if (error) - goto out_truncate; - } + error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); + if (error) + goto out_truncate; if (test_bit(GIF_INVALID, &ip->i_flags)) { error = gfs2_inode_refresh(ip); @@ -1555,6 +1562,7 @@ static void gfs2_evict_inode(struct inode *inode) goto out_truncate; } +alloc_failed: if (gfs2_holder_initialized(&ip->i_iopen_gh) && test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { ip->i_iopen_gh.gh_flags |= GL_NOCACHE; @@ -1621,7 +1629,8 @@ out_unlock: } gfs2_holder_uninit(&ip->i_iopen_gh); } - gfs2_glock_dq_uninit(&gh); + if (gfs2_holder_initialized(&gh)) + gfs2_glock_dq_uninit(&gh); if (error && error != GLR_TRYFAILED && error != -EROFS) fs_warn(sdp, "gfs2_evict_inode: %d\n", error); out: @@ -1631,13 +1640,13 @@ out: gfs2_ordered_del_inode(ip); clear_inode(inode); gfs2_dir_hash_inval(ip); - ip->i_gl->gl_object = NULL; - flush_delayed_work(&ip->i_gl->gl_work); + glock_set_object(ip->i_gl, NULL); + wait_on_bit_io(&ip->i_flags, GIF_GLOP_PENDING, TASK_UNINTERRUPTIBLE); gfs2_glock_add_to_lru(ip->i_gl); gfs2_glock_put(ip->i_gl); ip->i_gl = NULL; if (gfs2_holder_initialized(&ip->i_iopen_gh)) { - ip->i_iopen_gh.gh_gl->gl_object = NULL; + glock_set_object(ip->i_iopen_gh.gh_gl, NULL); ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_uninit(&ip->i_iopen_gh); } diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index e77bc52b468f..ca1f97ff898c 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -626,12 +626,12 @@ static struct attribute *tune_attrs[] = { NULL, }; -static struct attribute_group tune_group = { +static const struct attribute_group tune_group = { .name = "tune", .attrs = tune_attrs, }; -static struct attribute_group lock_module_group = { +static const struct attribute_group lock_module_group = { .name = "lock_module", .attrs = lock_module_attrs, }; diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c index d87721aeb575..54179554c7d2 100644 --- a/fs/gfs2/xattr.c +++ b/fs/gfs2/xattr.c @@ -1327,8 +1327,8 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip) gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE); for (x = 0; x < rlist.rl_rgrps; x++) { - struct gfs2_rgrpd *rgd; - rgd = rlist.rl_ghs[x].gh_gl->gl_object; + struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(rlist.rl_ghs[x].gh_gl); + rg_blocks += rgd->rd_length; } diff --git a/fs/locks.c b/fs/locks.c index af2031a1fcff..afefeb4ad6de 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1858,8 +1858,8 @@ EXPORT_SYMBOL(generic_setlease); * * Call this to establish a lease on the file. The "lease" argument is not * used for F_UNLCK requests and may be NULL. For commands that set or alter - * an existing lease, the (*lease)->fl_lmops->lm_break operation must be set; - * if not, this function will return -ENOLCK (and generate a scary-looking + * an existing lease, the ``(*lease)->fl_lmops->lm_break`` operation must be + * set; if not, this function will return -ENOLCK (and generate a scary-looking * stack trace). * * The "priv" pointer is passed directly to the lm_setup function as-is. It @@ -1972,15 +1972,13 @@ EXPORT_SYMBOL(locks_lock_inode_wait); * @cmd: the type of lock to apply. * * Apply a %FL_FLOCK style lock to an open file descriptor. - * The @cmd can be one of + * The @cmd can be one of: * - * %LOCK_SH -- a shared lock. - * - * %LOCK_EX -- an exclusive lock. - * - * %LOCK_UN -- remove an existing lock. - * - * %LOCK_MAND -- a `mandatory' flock. This exists to emulate Windows Share Modes. + * - %LOCK_SH -- a shared lock. + * - %LOCK_EX -- an exclusive lock. + * - %LOCK_UN -- remove an existing lock. + * - %LOCK_MAND -- a 'mandatory' flock. + * This exists to emulate Windows Share Modes. * * %LOCK_MAND can be combined with %LOCK_READ or %LOCK_WRITE to allow other * processes read and write access respectively. @@ -2086,26 +2084,22 @@ static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl) /* Report the first existing lock that would conflict with l. * This implements the F_GETLK command of fcntl(). */ -int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock __user *l) +int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock *flock) { struct file_lock file_lock; - struct flock flock; int error; - error = -EFAULT; - if (copy_from_user(&flock, l, sizeof(flock))) - goto out; error = -EINVAL; - if ((flock.l_type != F_RDLCK) && (flock.l_type != F_WRLCK)) + if (flock->l_type != F_RDLCK && flock->l_type != F_WRLCK) goto out; - error = flock_to_posix_lock(filp, &file_lock, &flock); + error = flock_to_posix_lock(filp, &file_lock, flock); if (error) goto out; if (cmd == F_OFD_GETLK) { error = -EINVAL; - if (flock.l_pid != 0) + if (flock->l_pid != 0) goto out; cmd = F_GETLK; @@ -2117,15 +2111,12 @@ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock __user *l) if (error) goto out; - flock.l_type = file_lock.fl_type; + flock->l_type = file_lock.fl_type; if (file_lock.fl_type != F_UNLCK) { - error = posix_lock_to_flock(&flock, &file_lock); + error = posix_lock_to_flock(flock, &file_lock); if (error) goto rel_priv; } - error = -EFAULT; - if (!copy_to_user(l, &flock, sizeof(flock))) - error = 0; rel_priv: locks_release_private(&file_lock); out: @@ -2218,26 +2209,16 @@ check_fmode_for_setlk(struct file_lock *fl) * This implements both the F_SETLK and F_SETLKW commands of fcntl(). */ int fcntl_setlk(unsigned int fd, struct file *filp, unsigned int cmd, - struct flock __user *l) + struct flock *flock) { struct file_lock *file_lock = locks_alloc_lock(); - struct flock flock; - struct inode *inode; + struct inode *inode = locks_inode(filp); struct file *f; int error; if (file_lock == NULL) return -ENOLCK; - inode = locks_inode(filp); - - /* - * This might block, so we do it before checking the inode. - */ - error = -EFAULT; - if (copy_from_user(&flock, l, sizeof(flock))) - goto out; - /* Don't allow mandatory locks on files that may be memory mapped * and shared. */ @@ -2246,7 +2227,7 @@ int fcntl_setlk(unsigned int fd, struct file *filp, unsigned int cmd, goto out; } - error = flock_to_posix_lock(filp, file_lock, &flock); + error = flock_to_posix_lock(filp, file_lock, flock); if (error) goto out; @@ -2261,7 +2242,7 @@ int fcntl_setlk(unsigned int fd, struct file *filp, unsigned int cmd, switch (cmd) { case F_OFD_SETLK: error = -EINVAL; - if (flock.l_pid != 0) + if (flock->l_pid != 0) goto out; cmd = F_SETLK; @@ -2270,7 +2251,7 @@ int fcntl_setlk(unsigned int fd, struct file *filp, unsigned int cmd, break; case F_OFD_SETLKW: error = -EINVAL; - if (flock.l_pid != 0) + if (flock->l_pid != 0) goto out; cmd = F_SETLKW; @@ -2315,26 +2296,22 @@ out: /* Report the first existing lock that would conflict with l. * This implements the F_GETLK command of fcntl(). */ -int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 __user *l) +int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 *flock) { struct file_lock file_lock; - struct flock64 flock; int error; - error = -EFAULT; - if (copy_from_user(&flock, l, sizeof(flock))) - goto out; error = -EINVAL; - if ((flock.l_type != F_RDLCK) && (flock.l_type != F_WRLCK)) + if (flock->l_type != F_RDLCK && flock->l_type != F_WRLCK) goto out; - error = flock64_to_posix_lock(filp, &file_lock, &flock); + error = flock64_to_posix_lock(filp, &file_lock, flock); if (error) goto out; if (cmd == F_OFD_GETLK) { error = -EINVAL; - if (flock.l_pid != 0) + if (flock->l_pid != 0) goto out; cmd = F_GETLK64; @@ -2346,13 +2323,9 @@ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 __user *l) if (error) goto out; - flock.l_type = file_lock.fl_type; + flock->l_type = file_lock.fl_type; if (file_lock.fl_type != F_UNLCK) - posix_lock_to_flock64(&flock, &file_lock); - - error = -EFAULT; - if (!copy_to_user(l, &flock, sizeof(flock))) - error = 0; + posix_lock_to_flock64(flock, &file_lock); locks_release_private(&file_lock); out: @@ -2363,26 +2336,16 @@ out: * This implements both the F_SETLK and F_SETLKW commands of fcntl(). */ int fcntl_setlk64(unsigned int fd, struct file *filp, unsigned int cmd, - struct flock64 __user *l) + struct flock64 *flock) { struct file_lock *file_lock = locks_alloc_lock(); - struct flock64 flock; - struct inode *inode; + struct inode *inode = locks_inode(filp); struct file *f; int error; if (file_lock == NULL) return -ENOLCK; - /* - * This might block, so we do it before checking the inode. - */ - error = -EFAULT; - if (copy_from_user(&flock, l, sizeof(flock))) - goto out; - - inode = locks_inode(filp); - /* Don't allow mandatory locks on files that may be memory mapped * and shared. */ @@ -2391,7 +2354,7 @@ int fcntl_setlk64(unsigned int fd, struct file *filp, unsigned int cmd, goto out; } - error = flock64_to_posix_lock(filp, file_lock, &flock); + error = flock64_to_posix_lock(filp, file_lock, flock); if (error) goto out; @@ -2406,7 +2369,7 @@ int fcntl_setlk64(unsigned int fd, struct file *filp, unsigned int cmd, switch (cmd) { case F_OFD_SETLK: error = -EINVAL; - if (flock.l_pid != 0) + if (flock->l_pid != 0) goto out; cmd = F_SETLK64; @@ -2415,7 +2378,7 @@ int fcntl_setlk64(unsigned int fd, struct file *filp, unsigned int cmd, break; case F_OFD_SETLKW: error = -EINVAL; - if (flock.l_pid != 0) + if (flock->l_pid != 0) goto out; cmd = F_SETLKW64; diff --git a/fs/mount.h b/fs/mount.h index bf1fda6eed8f..de45d9e76748 100644 --- a/fs/mount.h +++ b/fs/mount.h @@ -58,6 +58,7 @@ struct mount { struct mnt_namespace *mnt_ns; /* containing namespace */ struct mountpoint *mnt_mp; /* where is it mounted */ struct hlist_node mnt_mp_list; /* list mounts with the same mountpoint */ + struct list_head mnt_umounting; /* list entry for umount propagation */ #ifdef CONFIG_FSNOTIFY struct fsnotify_mark_connector __rcu *mnt_fsnotify_marks; __u32 mnt_fsnotify_mask; diff --git a/fs/namespace.c b/fs/namespace.c index 5a4438445bf7..f70914a859a4 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -236,6 +236,7 @@ static struct mount *alloc_vfsmnt(const char *name) INIT_LIST_HEAD(&mnt->mnt_slave_list); INIT_LIST_HEAD(&mnt->mnt_slave); INIT_HLIST_NODE(&mnt->mnt_mp_list); + INIT_LIST_HEAD(&mnt->mnt_umounting); init_fs_pin(&mnt->mnt_umount, drop_mountpoint); } return mnt; diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 2be32955d7f2..38d0383dc7f9 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -911,24 +911,13 @@ __be32 nfsd_splice_read(struct svc_rqst *rqstp, __be32 nfsd_readv(struct file *file, loff_t offset, struct kvec *vec, int vlen, unsigned long *count) { - mm_segment_t oldfs; + struct iov_iter iter; int host_err; - oldfs = get_fs(); - set_fs(KERNEL_DS); - host_err = vfs_readv(file, (struct iovec __user *)vec, vlen, &offset, 0); - set_fs(oldfs); - return nfsd_finish_read(file, count, host_err); -} + iov_iter_kvec(&iter, READ | ITER_KVEC, vec, vlen, *count); + host_err = vfs_iter_read(file, &iter, &offset, 0); -static __be32 -nfsd_vfs_read(struct svc_rqst *rqstp, struct file *file, - loff_t offset, struct kvec *vec, int vlen, unsigned long *count) -{ - if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &rqstp->rq_flags)) - return nfsd_splice_read(rqstp, file, offset, count); - else - return nfsd_readv(file, offset, vec, vlen, count); + return nfsd_finish_read(file, count, host_err); } /* @@ -974,7 +963,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, unsigned long *cnt, int stable) { struct svc_export *exp; - mm_segment_t oldfs; + struct iov_iter iter; __be32 err = 0; int host_err; int use_wgather; @@ -1000,10 +989,8 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, if (stable && !use_wgather) flags |= RWF_SYNC; - /* Write the data. */ - oldfs = get_fs(); set_fs(KERNEL_DS); - host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos, flags); - set_fs(oldfs); + iov_iter_kvec(&iter, WRITE | ITER_KVEC, vec, vlen, *cnt); + host_err = vfs_iter_write(file, &iter, &pos, flags); if (host_err < 0) goto out_nfserr; *cnt = host_err; @@ -1044,7 +1031,12 @@ __be32 nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, ra = nfsd_init_raparms(file); trace_read_opened(rqstp, fhp, offset, vlen); - err = nfsd_vfs_read(rqstp, file, offset, vec, vlen, count); + + if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &rqstp->rq_flags)) + err = nfsd_splice_read(rqstp, file, offset, count); + else + err = nfsd_readv(file, offset, vec, vlen, count); + trace_read_io_done(rqstp, fhp, offset, vlen); if (ra) @@ -1464,41 +1456,34 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp, __be32 nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) { - mm_segment_t oldfs; __be32 err; - int host_err; + const char *link; struct path path; + DEFINE_DELAYED_CALL(done); + int len; err = fh_verify(rqstp, fhp, S_IFLNK, NFSD_MAY_NOP); - if (err) - goto out; + if (unlikely(err)) + return err; path.mnt = fhp->fh_export->ex_path.mnt; path.dentry = fhp->fh_dentry; - err = nfserr_inval; - if (!d_is_symlink(path.dentry)) - goto out; + if (unlikely(!d_is_symlink(path.dentry))) + return nfserr_inval; touch_atime(&path); - /* N.B. Why does this call need a get_fs()?? - * Remove the set_fs and watch the fireworks:-) --okir - */ - oldfs = get_fs(); set_fs(KERNEL_DS); - host_err = vfs_readlink(path.dentry, (char __user *)buf, *lenp); - set_fs(oldfs); - - if (host_err < 0) - goto out_nfserr; - *lenp = host_err; - err = 0; -out: - return err; + link = vfs_get_link(path.dentry, &done); + if (IS_ERR(link)) + return nfserrno(PTR_ERR(link)); -out_nfserr: - err = nfserrno(host_err); - goto out; + len = strlen(link); + if (len < *lenp) + *lenp = len; + memcpy(buf, link, *lenp); + do_delayed_call(&done); + return 0; } /* diff --git a/fs/pnode.c b/fs/pnode.c index 5bc7896d122a..53d411a371ce 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -24,6 +24,11 @@ static inline struct mount *first_slave(struct mount *p) return list_entry(p->mnt_slave_list.next, struct mount, mnt_slave); } +static inline struct mount *last_slave(struct mount *p) +{ + return list_entry(p->mnt_slave_list.prev, struct mount, mnt_slave); +} + static inline struct mount *next_slave(struct mount *p) { return list_entry(p->mnt_slave.next, struct mount, mnt_slave); @@ -162,6 +167,19 @@ static struct mount *propagation_next(struct mount *m, } } +static struct mount *skip_propagation_subtree(struct mount *m, + struct mount *origin) +{ + /* + * Advance m such that propagation_next will not return + * the slaves of m. + */ + if (!IS_MNT_NEW(m) && !list_empty(&m->mnt_slave_list)) + m = last_slave(m); + + return m; +} + static struct mount *next_group(struct mount *m, struct mount *origin) { while (1) { @@ -413,65 +431,104 @@ void propagate_mount_unlock(struct mount *mnt) } } -/* - * Mark all mounts that the MNT_LOCKED logic will allow to be unmounted. - */ -static void mark_umount_candidates(struct mount *mnt) +static void umount_one(struct mount *mnt, struct list_head *to_umount) { - struct mount *parent = mnt->mnt_parent; - struct mount *m; - - BUG_ON(parent == mnt); - - for (m = propagation_next(parent, parent); m; - m = propagation_next(m, parent)) { - struct mount *child = __lookup_mnt(&m->mnt, - mnt->mnt_mountpoint); - if (!child || (child->mnt.mnt_flags & MNT_UMOUNT)) - continue; - if (!IS_MNT_LOCKED(child) || IS_MNT_MARKED(m)) { - SET_MNT_MARK(child); - } - } + CLEAR_MNT_MARK(mnt); + mnt->mnt.mnt_flags |= MNT_UMOUNT; + list_del_init(&mnt->mnt_child); + list_del_init(&mnt->mnt_umounting); + list_move_tail(&mnt->mnt_list, to_umount); } /* * NOTE: unmounting 'mnt' naturally propagates to all other mounts its * parent propagates to. */ -static void __propagate_umount(struct mount *mnt) +static bool __propagate_umount(struct mount *mnt, + struct list_head *to_umount, + struct list_head *to_restore) { - struct mount *parent = mnt->mnt_parent; - struct mount *m; + bool progress = false; + struct mount *child; - BUG_ON(parent == mnt); + /* + * The state of the parent won't change if this mount is + * already unmounted or marked as without children. + */ + if (mnt->mnt.mnt_flags & (MNT_UMOUNT | MNT_MARKED)) + goto out; - for (m = propagation_next(parent, parent); m; - m = propagation_next(m, parent)) { - struct mount *topper; - struct mount *child = __lookup_mnt(&m->mnt, - mnt->mnt_mountpoint); - /* - * umount the child only if the child has no children - * and the child is marked safe to unmount. - */ - if (!child || !IS_MNT_MARKED(child)) + /* Verify topper is the only grandchild that has not been + * speculatively unmounted. + */ + list_for_each_entry(child, &mnt->mnt_mounts, mnt_child) { + if (child->mnt_mountpoint == mnt->mnt.mnt_root) continue; - CLEAR_MNT_MARK(child); + if (!list_empty(&child->mnt_umounting) && IS_MNT_MARKED(child)) + continue; + /* Found a mounted child */ + goto children; + } - /* If there is exactly one mount covering all of child - * replace child with that mount. - */ - topper = find_topper(child); - if (topper) - mnt_change_mountpoint(child->mnt_parent, child->mnt_mp, - topper); + /* Mark mounts that can be unmounted if not locked */ + SET_MNT_MARK(mnt); + progress = true; + + /* If a mount is without children and not locked umount it. */ + if (!IS_MNT_LOCKED(mnt)) { + umount_one(mnt, to_umount); + } else { +children: + list_move_tail(&mnt->mnt_umounting, to_restore); + } +out: + return progress; +} + +static void umount_list(struct list_head *to_umount, + struct list_head *to_restore) +{ + struct mount *mnt, *child, *tmp; + list_for_each_entry(mnt, to_umount, mnt_list) { + list_for_each_entry_safe(child, tmp, &mnt->mnt_mounts, mnt_child) { + /* topper? */ + if (child->mnt_mountpoint == mnt->mnt.mnt_root) + list_move_tail(&child->mnt_umounting, to_restore); + else + umount_one(child, to_umount); + } + } +} - if (list_empty(&child->mnt_mounts)) { - list_del_init(&child->mnt_child); - child->mnt.mnt_flags |= MNT_UMOUNT; - list_move_tail(&child->mnt_list, &mnt->mnt_list); +static void restore_mounts(struct list_head *to_restore) +{ + /* Restore mounts to a clean working state */ + while (!list_empty(to_restore)) { + struct mount *mnt, *parent; + struct mountpoint *mp; + + mnt = list_first_entry(to_restore, struct mount, mnt_umounting); + CLEAR_MNT_MARK(mnt); + list_del_init(&mnt->mnt_umounting); + + /* Should this mount be reparented? */ + mp = mnt->mnt_mp; + parent = mnt->mnt_parent; + while (parent->mnt.mnt_flags & MNT_UMOUNT) { + mp = parent->mnt_mp; + parent = parent->mnt_parent; } + if (parent != mnt->mnt_parent) + mnt_change_mountpoint(parent, mp, mnt); + } +} + +static void cleanup_umount_visitations(struct list_head *visited) +{ + while (!list_empty(visited)) { + struct mount *mnt = + list_first_entry(visited, struct mount, mnt_umounting); + list_del_init(&mnt->mnt_umounting); } } @@ -485,11 +542,68 @@ static void __propagate_umount(struct mount *mnt) int propagate_umount(struct list_head *list) { struct mount *mnt; + LIST_HEAD(to_restore); + LIST_HEAD(to_umount); + LIST_HEAD(visited); + + /* Find candidates for unmounting */ + list_for_each_entry_reverse(mnt, list, mnt_list) { + struct mount *parent = mnt->mnt_parent; + struct mount *m; + + /* + * If this mount has already been visited it is known that it's + * entire peer group and all of their slaves in the propagation + * tree for the mountpoint has already been visited and there is + * no need to visit them again. + */ + if (!list_empty(&mnt->mnt_umounting)) + continue; + + list_add_tail(&mnt->mnt_umounting, &visited); + for (m = propagation_next(parent, parent); m; + m = propagation_next(m, parent)) { + struct mount *child = __lookup_mnt(&m->mnt, + mnt->mnt_mountpoint); + if (!child) + continue; + + if (!list_empty(&child->mnt_umounting)) { + /* + * If the child has already been visited it is + * know that it's entire peer group and all of + * their slaves in the propgation tree for the + * mountpoint has already been visited and there + * is no need to visit this subtree again. + */ + m = skip_propagation_subtree(m, parent); + continue; + } else if (child->mnt.mnt_flags & MNT_UMOUNT) { + /* + * We have come accross an partially unmounted + * mount in list that has not been visited yet. + * Remember it has been visited and continue + * about our merry way. + */ + list_add_tail(&child->mnt_umounting, &visited); + continue; + } + + /* Check the child and parents while progress is made */ + while (__propagate_umount(child, + &to_umount, &to_restore)) { + /* Is the parent a umount candidate? */ + child = child->mnt_parent; + if (list_empty(&child->mnt_umounting)) + break; + } + } + } - list_for_each_entry_reverse(mnt, list, mnt_list) - mark_umount_candidates(mnt); + umount_list(&to_umount, &to_restore); + restore_mounts(&to_restore); + cleanup_umount_visitations(&visited); + list_splice_tail(&to_umount, list); - list_for_each_entry(mnt, list, mnt_list) - __propagate_umount(mnt); return 0; } diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 4ee55274f155..45629f4b5402 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -504,7 +504,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) if (&m->list == &kclist_head) { if (clear_user(buffer, tsz)) return -EFAULT; - } else if (is_vmalloc_or_module_addr((void *)start)) { + } else if (m->type == KCORE_VMALLOC) { vread(buf, (char *)start, tsz); /* we have to zero-fill user buffer even if no read */ if (copy_to_user(buffer, buf, tsz)) diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 792a4e5f9226..4d02c3b65061 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -349,48 +349,48 @@ int pstore_mkfile(struct dentry *root, struct pstore_record *record) switch (record->type) { case PSTORE_TYPE_DMESG: - scnprintf(name, sizeof(name), "dmesg-%s-%lld%s", + scnprintf(name, sizeof(name), "dmesg-%s-%llu%s", record->psi->name, record->id, record->compressed ? ".enc.z" : ""); break; case PSTORE_TYPE_CONSOLE: - scnprintf(name, sizeof(name), "console-%s-%lld", + scnprintf(name, sizeof(name), "console-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_FTRACE: - scnprintf(name, sizeof(name), "ftrace-%s-%lld", + scnprintf(name, sizeof(name), "ftrace-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_MCE: - scnprintf(name, sizeof(name), "mce-%s-%lld", + scnprintf(name, sizeof(name), "mce-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_PPC_RTAS: - scnprintf(name, sizeof(name), "rtas-%s-%lld", + scnprintf(name, sizeof(name), "rtas-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_PPC_OF: - scnprintf(name, sizeof(name), "powerpc-ofw-%s-%lld", + scnprintf(name, sizeof(name), "powerpc-ofw-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_PPC_COMMON: - scnprintf(name, sizeof(name), "powerpc-common-%s-%lld", + scnprintf(name, sizeof(name), "powerpc-common-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_PMSG: - scnprintf(name, sizeof(name), "pmsg-%s-%lld", + scnprintf(name, sizeof(name), "pmsg-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_PPC_OPAL: - scnprintf(name, sizeof(name), "powerpc-opal-%s-%lld", + scnprintf(name, sizeof(name), "powerpc-opal-%s-%llu", record->psi->name, record->id); break; case PSTORE_TYPE_UNKNOWN: - scnprintf(name, sizeof(name), "unknown-%s-%lld", + scnprintf(name, sizeof(name), "unknown-%s-%llu", record->psi->name, record->id); break; default: - scnprintf(name, sizeof(name), "type%d-%s-%lld", + scnprintf(name, sizeof(name), "type%d-%s-%llu", record->type, record->psi->name, record->id); break; } diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h index c416e653dc4f..58051265626f 100644 --- a/fs/pstore/internal.h +++ b/fs/pstore/internal.h @@ -30,5 +30,7 @@ extern void pstore_get_backend_records(struct pstore_info *psi, extern int pstore_mkfile(struct dentry *root, struct pstore_record *record); extern bool pstore_is_mounted(void); +extern void pstore_record_init(struct pstore_record *record, + struct pstore_info *psi); #endif diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index d468eec9b8a6..1b6e0ff6bff5 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -474,6 +474,20 @@ static size_t copy_kmsg_to_buffer(int hsize, size_t len) return total_len; } +void pstore_record_init(struct pstore_record *record, + struct pstore_info *psinfo) +{ + memset(record, 0, sizeof(*record)); + + record->psi = psinfo; + + /* Report zeroed timestamp if called before timekeeping has resumed. */ + if (__getnstimeofday(&record->time)) { + record->time.tv_sec = 0; + record->time.tv_nsec = 0; + } +} + /* * callback from kmsg_dump. (s2,l2) has the most recently * written bytes, older bytes are in (s1,l1). Save as much @@ -509,15 +523,14 @@ static void pstore_dump(struct kmsg_dumper *dumper, int header_size; int zipped_len = -1; size_t dump_size; - struct pstore_record record = { - .type = PSTORE_TYPE_DMESG, - .count = oopscount, - .reason = reason, - .part = part, - .compressed = false, - .buf = psinfo->buf, - .psi = psinfo, - }; + struct pstore_record record; + + pstore_record_init(&record, psinfo); + record.type = PSTORE_TYPE_DMESG; + record.count = oopscount; + record.reason = reason; + record.part = part; + record.buf = psinfo->buf; if (big_oops_buf && is_locked) { dst = big_oops_buf; @@ -587,12 +600,12 @@ static void pstore_console_write(struct console *con, const char *s, unsigned c) const char *e = s + c; while (s < e) { - struct pstore_record record = { - .type = PSTORE_TYPE_CONSOLE, - .psi = psinfo, - }; + struct pstore_record record; unsigned long flags; + pstore_record_init(&record, psinfo); + record.type = PSTORE_TYPE_CONSOLE; + if (c > psinfo->bufsize) c = psinfo->bufsize; @@ -640,19 +653,16 @@ static int pstore_write_user_compat(struct pstore_record *record, if (record->buf) return -EINVAL; - record->buf = kmalloc(record->size, GFP_KERNEL); - if (!record->buf) - return -ENOMEM; - - if (unlikely(copy_from_user(record->buf, buf, record->size))) { - ret = -EFAULT; + record->buf = memdup_user(buf, record->size); + if (unlikely(IS_ERR(record->buf))) { + ret = PTR_ERR(record->buf); goto out; } ret = record->psi->write(record); -out: kfree(record->buf); +out: record->buf = NULL; return unlikely(ret < 0) ? ret : record->size; @@ -770,8 +780,11 @@ static void decompress_record(struct pstore_record *record) int unzipped_len; char *decompressed; + if (!record->compressed) + return; + /* Only PSTORE_TYPE_DMESG support compression. */ - if (!record->compressed || record->type != PSTORE_TYPE_DMESG) { + if (record->type != PSTORE_TYPE_DMESG) { pr_warn("ignored compressed record type %d\n", record->type); return; } @@ -819,6 +832,7 @@ void pstore_get_backend_records(struct pstore_info *psi, struct dentry *root, int quiet) { int failed = 0; + unsigned int stop_loop = 65536; if (!psi || !root) return; @@ -832,7 +846,7 @@ void pstore_get_backend_records(struct pstore_info *psi, * may reallocate record.buf. On success, pstore_mkfile() will keep * the record.buf, so free it only on failure. */ - for (;;) { + for (; stop_loop; stop_loop--) { struct pstore_record *record; int rc; @@ -841,13 +855,15 @@ void pstore_get_backend_records(struct pstore_info *psi, pr_err("out of memory creating record\n"); break; } - record->psi = psi; + pstore_record_init(record, psi); record->size = psi->read(record); /* No more records left in backend? */ - if (record->size <= 0) + if (record->size <= 0) { + kfree(record); break; + } decompress_record(record); rc = pstore_mkfile(root, record); @@ -865,8 +881,11 @@ out: mutex_unlock(&psi->read_mutex); if (failed) - pr_warn("failed to load %d record(s) from '%s'\n", + pr_warn("failed to create %d record(s) from '%s'\n", failed, psi->name); + if (!stop_loop) + pr_err("looping? Too many records seen from '%s'\n", + psi->name); } static void pstore_dowork(struct work_struct *work) diff --git a/fs/pstore/pmsg.c b/fs/pstore/pmsg.c index 209755e0d7c8..24db02de1787 100644 --- a/fs/pstore/pmsg.c +++ b/fs/pstore/pmsg.c @@ -22,16 +22,16 @@ static DEFINE_MUTEX(pmsg_lock); static ssize_t write_pmsg(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - struct pstore_record record = { - .type = PSTORE_TYPE_PMSG, - .size = count, - .psi = psinfo, - }; + struct pstore_record record; int ret; if (!count) return 0; + pstore_record_init(&record, psinfo); + record.type = PSTORE_TYPE_PMSG; + record.size = count; + /* check outside lock, page in any data. write_user also checks */ if (!access_ok(VERIFY_READ, buf, count)) return -EFAULT; diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 5cb022c8cd33..7125b398d312 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -27,7 +27,6 @@ #include <linux/module.h> #include <linux/version.h> #include <linux/pstore.h> -#include <linux/time.h> #include <linux/io.h> #include <linux/ioport.h> #include <linux/platform_device.h> @@ -356,20 +355,15 @@ out: } static size_t ramoops_write_kmsg_hdr(struct persistent_ram_zone *prz, - bool compressed) + struct pstore_record *record) { char *hdr; - struct timespec timestamp; size_t len; - /* Report zeroed timestamp if called before timekeeping has resumed. */ - if (__getnstimeofday(×tamp)) { - timestamp.tv_sec = 0; - timestamp.tv_nsec = 0; - } hdr = kasprintf(GFP_ATOMIC, RAMOOPS_KERNMSG_HDR "%lu.%lu-%c\n", - (long)timestamp.tv_sec, (long)(timestamp.tv_nsec / 1000), - compressed ? 'C' : 'D'); + record->time.tv_sec, + record->time.tv_nsec / 1000, + record->compressed ? 'C' : 'D'); WARN_ON_ONCE(!hdr); len = hdr ? strlen(hdr) : 0; persistent_ram_write(prz, hdr, len); @@ -440,7 +434,7 @@ static int notrace ramoops_pstore_write(struct pstore_record *record) prz = cxt->dprzs[cxt->dump_write_cnt]; /* Build header and append record contents. */ - hlen = ramoops_write_kmsg_hdr(prz, record->compressed); + hlen = ramoops_write_kmsg_hdr(prz, record); size = record->size; if (size + hlen > prz->buffer_size) size = prz->buffer_size - hlen; diff --git a/fs/read_write.c b/fs/read_write.c index d591eeed061f..a2cbc8303dae 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -356,46 +356,6 @@ out_putf: } #endif -ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos) -{ - struct kiocb kiocb; - ssize_t ret; - - if (!file->f_op->read_iter) - return -EINVAL; - - init_sync_kiocb(&kiocb, file); - kiocb.ki_pos = *ppos; - - iter->type |= READ; - ret = call_read_iter(file, &kiocb, iter); - BUG_ON(ret == -EIOCBQUEUED); - if (ret > 0) - *ppos = kiocb.ki_pos; - return ret; -} -EXPORT_SYMBOL(vfs_iter_read); - -ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos) -{ - struct kiocb kiocb; - ssize_t ret; - - if (!file->f_op->write_iter) - return -EINVAL; - - init_sync_kiocb(&kiocb, file); - kiocb.ki_pos = *ppos; - - iter->type |= WRITE; - ret = call_write_iter(file, &kiocb, iter); - BUG_ON(ret == -EIOCBQUEUED); - if (ret > 0) - *ppos = kiocb.ki_pos; - return ret; -} -EXPORT_SYMBOL(vfs_iter_write); - int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t count) { struct inode *inode; @@ -910,86 +870,114 @@ out: } #endif -static ssize_t __do_readv_writev(int type, struct file *file, - struct iov_iter *iter, loff_t *pos, int flags) +static ssize_t do_iter_read(struct file *file, struct iov_iter *iter, + loff_t *pos, int flags) { size_t tot_len; ssize_t ret = 0; + if (!(file->f_mode & FMODE_READ)) + return -EBADF; + if (!(file->f_mode & FMODE_CAN_READ)) + return -EINVAL; + tot_len = iov_iter_count(iter); if (!tot_len) goto out; - ret = rw_verify_area(type, file, pos, tot_len); + ret = rw_verify_area(READ, file, pos, tot_len); if (ret < 0) - goto out; - - if (type != READ) - file_start_write(file); + return ret; - if ((type == READ && file->f_op->read_iter) || - (type == WRITE && file->f_op->write_iter)) - ret = do_iter_readv_writev(file, iter, pos, type, flags); + if (file->f_op->read_iter) + ret = do_iter_readv_writev(file, iter, pos, READ, flags); else - ret = do_loop_readv_writev(file, iter, pos, type, flags); - - if (type != READ) - file_end_write(file); - + ret = do_loop_readv_writev(file, iter, pos, READ, flags); out: - if ((ret + (type == READ)) > 0) { - if (type == READ) - fsnotify_access(file); - else - fsnotify_modify(file); - } + if (ret >= 0) + fsnotify_access(file); return ret; } -static ssize_t do_readv_writev(int type, struct file *file, - const struct iovec __user *uvector, - unsigned long nr_segs, loff_t *pos, - int flags) +ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos, + int flags) { - struct iovec iovstack[UIO_FASTIOV]; - struct iovec *iov = iovstack; - struct iov_iter iter; - ssize_t ret; + if (!file->f_op->read_iter) + return -EINVAL; + return do_iter_read(file, iter, ppos, flags); +} +EXPORT_SYMBOL(vfs_iter_read); + +static ssize_t do_iter_write(struct file *file, struct iov_iter *iter, + loff_t *pos, int flags) +{ + size_t tot_len; + ssize_t ret = 0; + + if (!(file->f_mode & FMODE_WRITE)) + return -EBADF; + if (!(file->f_mode & FMODE_CAN_WRITE)) + return -EINVAL; - ret = import_iovec(type, uvector, nr_segs, - ARRAY_SIZE(iovstack), &iov, &iter); + tot_len = iov_iter_count(iter); + if (!tot_len) + return 0; + ret = rw_verify_area(WRITE, file, pos, tot_len); if (ret < 0) return ret; - ret = __do_readv_writev(type, file, &iter, pos, flags); - kfree(iov); - + file_start_write(file); + if (file->f_op->write_iter) + ret = do_iter_readv_writev(file, iter, pos, WRITE, flags); + else + ret = do_loop_readv_writev(file, iter, pos, WRITE, flags); + file_end_write(file); + if (ret > 0) + fsnotify_modify(file); return ret; } +ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos, + int flags) +{ + if (!file->f_op->write_iter) + return -EINVAL; + return do_iter_write(file, iter, ppos, flags); +} +EXPORT_SYMBOL(vfs_iter_write); + ssize_t vfs_readv(struct file *file, const struct iovec __user *vec, unsigned long vlen, loff_t *pos, int flags) { - if (!(file->f_mode & FMODE_READ)) - return -EBADF; - if (!(file->f_mode & FMODE_CAN_READ)) - return -EINVAL; + struct iovec iovstack[UIO_FASTIOV]; + struct iovec *iov = iovstack; + struct iov_iter iter; + ssize_t ret; - return do_readv_writev(READ, file, vec, vlen, pos, flags); -} + ret = import_iovec(READ, vec, vlen, ARRAY_SIZE(iovstack), &iov, &iter); + if (ret >= 0) { + ret = do_iter_read(file, &iter, pos, flags); + kfree(iov); + } + return ret; +} EXPORT_SYMBOL(vfs_readv); ssize_t vfs_writev(struct file *file, const struct iovec __user *vec, unsigned long vlen, loff_t *pos, int flags) { - if (!(file->f_mode & FMODE_WRITE)) - return -EBADF; - if (!(file->f_mode & FMODE_CAN_WRITE)) - return -EINVAL; + struct iovec iovstack[UIO_FASTIOV]; + struct iovec *iov = iovstack; + struct iov_iter iter; + ssize_t ret; - return do_readv_writev(WRITE, file, vec, vlen, pos, flags); + ret = import_iovec(WRITE, vec, vlen, ARRAY_SIZE(iovstack), &iov, &iter); + if (ret >= 0) { + ret = do_iter_write(file, &iter, pos, flags); + kfree(iov); + } + return ret; } - EXPORT_SYMBOL(vfs_writev); static ssize_t do_readv(unsigned long fd, const struct iovec __user *vec, @@ -1137,44 +1125,20 @@ SYSCALL_DEFINE6(pwritev2, unsigned long, fd, const struct iovec __user *, vec, } #ifdef CONFIG_COMPAT - -static ssize_t compat_do_readv_writev(int type, struct file *file, - const struct compat_iovec __user *uvector, - unsigned long nr_segs, loff_t *pos, - int flags) +static size_t compat_readv(struct file *file, + const struct compat_iovec __user *vec, + unsigned long vlen, loff_t *pos, int flags) { struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; struct iov_iter iter; ssize_t ret; - ret = compat_import_iovec(type, uvector, nr_segs, - UIO_FASTIOV, &iov, &iter); - if (ret < 0) - return ret; - - ret = __do_readv_writev(type, file, &iter, pos, flags); - kfree(iov); - - return ret; -} - -static size_t compat_readv(struct file *file, - const struct compat_iovec __user *vec, - unsigned long vlen, loff_t *pos, int flags) -{ - ssize_t ret = -EBADF; - - if (!(file->f_mode & FMODE_READ)) - goto out; - - ret = -EINVAL; - if (!(file->f_mode & FMODE_CAN_READ)) - goto out; - - ret = compat_do_readv_writev(READ, file, vec, vlen, pos, flags); - -out: + ret = compat_import_iovec(READ, vec, vlen, UIO_FASTIOV, &iov, &iter); + if (ret >= 0) { + ret = do_iter_read(file, &iter, pos, flags); + kfree(iov); + } if (ret > 0) add_rchar(current, ret); inc_syscr(current); @@ -1270,18 +1234,16 @@ static size_t compat_writev(struct file *file, const struct compat_iovec __user *vec, unsigned long vlen, loff_t *pos, int flags) { - ssize_t ret = -EBADF; - - if (!(file->f_mode & FMODE_WRITE)) - goto out; - - ret = -EINVAL; - if (!(file->f_mode & FMODE_CAN_WRITE)) - goto out; - - ret = compat_do_readv_writev(WRITE, file, vec, vlen, pos, flags); + struct iovec iovstack[UIO_FASTIOV]; + struct iovec *iov = iovstack; + struct iov_iter iter; + ssize_t ret; -out: + ret = compat_import_iovec(WRITE, vec, vlen, UIO_FASTIOV, &iov, &iter); + if (ret >= 0) { + ret = do_iter_write(file, &iter, pos, flags); + kfree(iov); + } if (ret > 0) add_wchar(current, ret); inc_syscw(current); diff --git a/fs/splice.c b/fs/splice.c index 540c4a44756c..ae41201d0325 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -762,7 +762,7 @@ iter_file_splice_write(struct pipe_inode_info *pipe, struct file *out, iov_iter_bvec(&from, ITER_BVEC | WRITE, array, n, sd.total_len - left); - ret = vfs_iter_write(out, &from, &sd.pos); + ret = vfs_iter_write(out, &from, &sd.pos, 0); if (ret <= 0) break; diff --git a/fs/statfs.c b/fs/statfs.c index 4e4623c7a126..41a6a82da5e2 100644 --- a/fs/statfs.c +++ b/fs/statfs.c @@ -244,6 +244,7 @@ SYSCALL_DEFINE2(ustat, unsigned, dev, struct ustat __user *, ubuf) #ifdef CONFIG_COMPAT static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *kbuf) { + struct compat_statfs buf; if (sizeof ubuf->f_blocks == 4) { if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail | kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL) @@ -257,20 +258,20 @@ static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs * && (kbuf->f_ffree & 0xffffffff00000000ULL)) return -EOVERFLOW; } - if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) || - __put_user(kbuf->f_type, &ubuf->f_type) || - __put_user(kbuf->f_bsize, &ubuf->f_bsize) || - __put_user(kbuf->f_blocks, &ubuf->f_blocks) || - __put_user(kbuf->f_bfree, &ubuf->f_bfree) || - __put_user(kbuf->f_bavail, &ubuf->f_bavail) || - __put_user(kbuf->f_files, &ubuf->f_files) || - __put_user(kbuf->f_ffree, &ubuf->f_ffree) || - __put_user(kbuf->f_namelen, &ubuf->f_namelen) || - __put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) || - __put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) || - __put_user(kbuf->f_frsize, &ubuf->f_frsize) || - __put_user(kbuf->f_flags, &ubuf->f_flags) || - __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare))) + memset(&buf, 0, sizeof(struct compat_statfs)); + buf.f_type = kbuf->f_type; + buf.f_bsize = kbuf->f_bsize; + buf.f_blocks = kbuf->f_blocks; + buf.f_bfree = kbuf->f_bfree; + buf.f_bavail = kbuf->f_bavail; + buf.f_files = kbuf->f_files; + buf.f_ffree = kbuf->f_ffree; + buf.f_namelen = kbuf->f_namelen; + buf.f_fsid.val[0] = kbuf->f_fsid.val[0]; + buf.f_fsid.val[1] = kbuf->f_fsid.val[1]; + buf.f_frsize = kbuf->f_frsize; + buf.f_flags = kbuf->f_flags; + if (copy_to_user(ubuf, &buf, sizeof(struct compat_statfs))) return -EFAULT; return 0; } @@ -299,6 +300,7 @@ COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct compat_statfs __user *, static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf) { + struct compat_statfs64 buf; if (sizeof(ubuf->f_bsize) == 4) { if ((kbuf->f_type | kbuf->f_bsize | kbuf->f_namelen | kbuf->f_frsize | kbuf->f_flags) & 0xffffffff00000000ULL) @@ -312,20 +314,20 @@ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstat && (kbuf->f_ffree & 0xffffffff00000000ULL)) return -EOVERFLOW; } - if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) || - __put_user(kbuf->f_type, &ubuf->f_type) || - __put_user(kbuf->f_bsize, &ubuf->f_bsize) || - __put_user(kbuf->f_blocks, &ubuf->f_blocks) || - __put_user(kbuf->f_bfree, &ubuf->f_bfree) || - __put_user(kbuf->f_bavail, &ubuf->f_bavail) || - __put_user(kbuf->f_files, &ubuf->f_files) || - __put_user(kbuf->f_ffree, &ubuf->f_ffree) || - __put_user(kbuf->f_namelen, &ubuf->f_namelen) || - __put_user(kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) || - __put_user(kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]) || - __put_user(kbuf->f_frsize, &ubuf->f_frsize) || - __put_user(kbuf->f_flags, &ubuf->f_flags) || - __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare))) + memset(&buf, 0, sizeof(struct compat_statfs64)); + buf.f_type = kbuf->f_type; + buf.f_bsize = kbuf->f_bsize; + buf.f_blocks = kbuf->f_blocks; + buf.f_bfree = kbuf->f_bfree; + buf.f_bavail = kbuf->f_bavail; + buf.f_files = kbuf->f_files; + buf.f_ffree = kbuf->f_ffree; + buf.f_namelen = kbuf->f_namelen; + buf.f_fsid.val[0] = kbuf->f_fsid.val[0]; + buf.f_fsid.val[1] = kbuf->f_fsid.val[1]; + buf.f_frsize = kbuf->f_frsize; + buf.f_flags = kbuf->f_flags; + if (copy_to_user(ubuf, &buf, sizeof(struct compat_statfs64))) return -EFAULT; return 0; } diff --git a/fs/timerfd.c b/fs/timerfd.c index c543cdb5f8ed..ece0c02d7e63 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -169,7 +169,7 @@ static ktime_t timerfd_get_remaining(struct timerfd_ctx *ctx) } static int timerfd_setup(struct timerfd_ctx *ctx, int flags, - const struct itimerspec *ktmr) + const struct itimerspec64 *ktmr) { enum hrtimer_mode htmode; ktime_t texp; @@ -178,10 +178,10 @@ static int timerfd_setup(struct timerfd_ctx *ctx, int flags, htmode = (flags & TFD_TIMER_ABSTIME) ? HRTIMER_MODE_ABS: HRTIMER_MODE_REL; - texp = timespec_to_ktime(ktmr->it_value); + texp = timespec64_to_ktime(ktmr->it_value); ctx->expired = 0; ctx->ticks = 0; - ctx->tintv = timespec_to_ktime(ktmr->it_interval); + ctx->tintv = timespec64_to_ktime(ktmr->it_interval); if (isalarm(ctx)) { alarm_init(&ctx->t.alarm, @@ -432,16 +432,15 @@ SYSCALL_DEFINE2(timerfd_create, int, clockid, int, flags) } static int do_timerfd_settime(int ufd, int flags, - const struct itimerspec *new, - struct itimerspec *old) + const struct itimerspec64 *new, + struct itimerspec64 *old) { struct fd f; struct timerfd_ctx *ctx; int ret; if ((flags & ~TFD_SETTIME_FLAGS) || - !timespec_valid(&new->it_value) || - !timespec_valid(&new->it_interval)) + !itimerspec64_valid(new)) return -EINVAL; ret = timerfd_fget(ufd, &f); @@ -487,8 +486,8 @@ static int do_timerfd_settime(int ufd, int flags, hrtimer_forward_now(&ctx->t.tmr, ctx->tintv); } - old->it_value = ktime_to_timespec(timerfd_get_remaining(ctx)); - old->it_interval = ktime_to_timespec(ctx->tintv); + old->it_value = ktime_to_timespec64(timerfd_get_remaining(ctx)); + old->it_interval = ktime_to_timespec64(ctx->tintv); /* * Re-program the timer to the new value ... @@ -500,7 +499,7 @@ static int do_timerfd_settime(int ufd, int flags, return ret; } -static int do_timerfd_gettime(int ufd, struct itimerspec *t) +static int do_timerfd_gettime(int ufd, struct itimerspec64 *t) { struct fd f; struct timerfd_ctx *ctx; @@ -525,8 +524,8 @@ static int do_timerfd_gettime(int ufd, struct itimerspec *t) hrtimer_restart(&ctx->t.tmr); } } - t->it_value = ktime_to_timespec(timerfd_get_remaining(ctx)); - t->it_interval = ktime_to_timespec(ctx->tintv); + t->it_value = ktime_to_timespec64(timerfd_get_remaining(ctx)); + t->it_interval = ktime_to_timespec64(ctx->tintv); spin_unlock_irq(&ctx->wqh.lock); fdput(f); return 0; @@ -536,15 +535,15 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, const struct itimerspec __user *, utmr, struct itimerspec __user *, otmr) { - struct itimerspec new, old; + struct itimerspec64 new, old; int ret; - if (copy_from_user(&new, utmr, sizeof(new))) + if (get_itimerspec64(&new, utmr)) return -EFAULT; ret = do_timerfd_settime(ufd, flags, &new, &old); if (ret) return ret; - if (otmr && copy_to_user(otmr, &old, sizeof(old))) + if (otmr && put_itimerspec64(&old, otmr)) return -EFAULT; return ret; @@ -552,11 +551,11 @@ SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr) { - struct itimerspec kotmr; + struct itimerspec64 kotmr; int ret = do_timerfd_gettime(ufd, &kotmr); if (ret) return ret; - return copy_to_user(otmr, &kotmr, sizeof(kotmr)) ? -EFAULT: 0; + return put_itimerspec64(&kotmr, otmr) ? -EFAULT : 0; } #ifdef CONFIG_COMPAT @@ -564,15 +563,15 @@ COMPAT_SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, const struct compat_itimerspec __user *, utmr, struct compat_itimerspec __user *, otmr) { - struct itimerspec new, old; + struct itimerspec64 new, old; int ret; - if (get_compat_itimerspec(&new, utmr)) + if (get_compat_itimerspec64(&new, utmr)) return -EFAULT; ret = do_timerfd_settime(ufd, flags, &new, &old); if (ret) return ret; - if (otmr && put_compat_itimerspec(otmr, &old)) + if (otmr && put_compat_itimerspec64(&old, otmr)) return -EFAULT; return ret; } @@ -580,10 +579,10 @@ COMPAT_SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags, COMPAT_SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct compat_itimerspec __user *, otmr) { - struct itimerspec kotmr; + struct itimerspec64 kotmr; int ret = do_timerfd_gettime(ufd, &kotmr); if (ret) return ret; - return put_compat_itimerspec(otmr, &kotmr) ? -EFAULT: 0; + return put_compat_itimerspec64(&kotmr, otmr) ? -EFAULT : 0; } #endif |
