diff options
| -rw-r--r-- | fs/f2fs/data.c | 5 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 21 | ||||
| -rw-r--r-- | fs/f2fs/file.c | 39 | ||||
| -rw-r--r-- | fs/f2fs/inline.c | 3 | ||||
| -rw-r--r-- | fs/f2fs/inode.c | 4 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 63 | ||||
| -rw-r--r-- | fs/f2fs/segment.h | 7 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 2 |
8 files changed, 139 insertions, 5 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 13ab72084913..8bbd60633f37 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1052,7 +1052,10 @@ static int f2fs_write_end(struct file *file, trace_f2fs_write_end(inode, pos, len, copied); - set_page_dirty(page); + if (f2fs_is_atomic_file(inode)) + register_inmem_page(inode, page); + else + set_page_dirty(page); if (pos + copied > i_size_read(inode)) { i_size_write(inode, pos + copied); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index a397f7ac9945..07fda632430b 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -192,8 +192,12 @@ static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, /* * ioctl commands */ -#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS -#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS +#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS +#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS + +#define F2FS_IOCTL_MAGIC 0xf5 +#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) +#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* @@ -263,6 +267,9 @@ struct f2fs_inode_info { unsigned long long xattr_ver; /* cp version of xattr modification */ struct extent_info ext; /* in-memory extent cache entry */ struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */ + + struct list_head inmem_pages; /* inmemory pages managed by f2fs */ + struct mutex inmem_lock; /* lock for inmemory pages */ }; static inline void get_extent_info(struct extent_info *ext, @@ -1051,7 +1058,8 @@ enum { FI_INLINE_DATA, /* used for inline data*/ FI_APPEND_WRITE, /* inode has appended data */ FI_UPDATE_WRITE, /* inode has in-place-update data */ - FI_NEED_IPU, /* used fo ipu for fdatasync */ + FI_NEED_IPU, /* used for ipu per file */ + FI_ATOMIC_FILE, /* indicate atomic file */ }; static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) @@ -1138,6 +1146,11 @@ static inline int f2fs_has_inline_data(struct inode *inode) return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); } +static inline bool f2fs_is_atomic_file(struct inode *inode) +{ + return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); +} + static inline void *inline_data_addr(struct page *page) { struct f2fs_inode *ri = F2FS_INODE(page); @@ -1275,6 +1288,8 @@ void destroy_node_manager_caches(void); /* * segment.c */ +void register_inmem_page(struct inode *, struct page *); +void commit_inmem_pages(struct inode *, bool); void f2fs_balance_fs(struct f2fs_sb_info *); void f2fs_balance_fs_bg(struct f2fs_sb_info *); int f2fs_issue_flush(struct f2fs_sb_info *); diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 735e9a20f939..3708b80125d0 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -862,6 +862,41 @@ out: return ret; } +static int f2fs_ioc_start_atomic_write(struct file *filp) +{ + struct inode *inode = file_inode(filp); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + if (!inode_owner_or_capable(inode)) + return -EACCES; + + f2fs_balance_fs(sbi); + + set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); + + return f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1, NULL); +} + +static int f2fs_ioc_commit_atomic_write(struct file *filp) +{ + struct inode *inode = file_inode(filp); + int ret; + + if (!inode_owner_or_capable(inode)) + return -EACCES; + + ret = mnt_want_write_file(filp); + if (ret) + return ret; + + if (f2fs_is_atomic_file(inode)) + commit_inmem_pages(inode, false); + + ret = f2fs_sync_file(filp, 0, LONG_MAX, 0); + mnt_drop_write_file(filp); + return ret; +} + static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) { struct inode *inode = file_inode(filp); @@ -899,6 +934,10 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return f2fs_ioc_getflags(filp, arg); case F2FS_IOC_SETFLAGS: return f2fs_ioc_setflags(filp, arg); + case F2FS_IOC_START_ATOMIC_WRITE: + return f2fs_ioc_start_atomic_write(filp); + case F2FS_IOC_COMMIT_ATOMIC_WRITE: + return f2fs_ioc_commit_atomic_write(filp); case FITRIM: return f2fs_ioc_fitrim(filp, arg); default: diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 6aef11d69e33..88036fd75797 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -21,6 +21,9 @@ bool f2fs_may_inline(struct inode *inode) if (!test_opt(F2FS_I_SB(inode), INLINE_DATA)) return false; + if (f2fs_is_atomic_file(inode)) + return false; + nr_blocks = F2FS_I(inode)->i_xattr_nid ? 3 : 2; if (inode->i_blocks > nr_blocks) return false; diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 63923eef1ffe..1b85f72d0071 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -269,6 +269,10 @@ void f2fs_evict_inode(struct inode *inode) struct f2fs_sb_info *sbi = F2FS_I_SB(inode); nid_t xnid = F2FS_I(inode)->i_xattr_nid; + /* some remained atomic pages should discarded */ + if (f2fs_is_atomic_file(inode)) + commit_inmem_pages(inode, true); + trace_f2fs_evict_inode(inode); truncate_inode_pages_final(&inode->i_data); diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 4d1c49a55e0c..923cb76fdc46 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -26,6 +26,7 @@ static struct kmem_cache *discard_entry_slab; static struct kmem_cache *sit_entry_set_slab; +static struct kmem_cache *inmem_entry_slab; /* * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since @@ -173,6 +174,60 @@ found_middle: return result + __reverse_ffz(tmp); } +void register_inmem_page(struct inode *inode, struct page *page) +{ + struct f2fs_inode_info *fi = F2FS_I(inode); + struct inmem_pages *new; + + new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); + + /* add atomic page indices to the list */ + new->page = page; + INIT_LIST_HEAD(&new->list); + + /* increase reference count with clean state */ + mutex_lock(&fi->inmem_lock); + get_page(page); + list_add_tail(&new->list, &fi->inmem_pages); + mutex_unlock(&fi->inmem_lock); +} + +void commit_inmem_pages(struct inode *inode, bool abort) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode_info *fi = F2FS_I(inode); + struct inmem_pages *cur, *tmp; + bool submit_bio = false; + struct f2fs_io_info fio = { + .type = DATA, + .rw = WRITE_SYNC, + }; + + f2fs_balance_fs(sbi); + f2fs_lock_op(sbi); + + mutex_lock(&fi->inmem_lock); + list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { + lock_page(cur->page); + if (!abort && cur->page->mapping == inode->i_mapping) { + f2fs_wait_on_page_writeback(cur->page, DATA); + if (clear_page_dirty_for_io(cur->page)) + inode_dec_dirty_pages(inode); + do_write_data_page(cur->page, &fio); + submit_bio = true; + } + f2fs_put_page(cur->page, 1); + list_del(&cur->list); + kmem_cache_free(inmem_entry_slab, cur); + } + if (submit_bio) + f2fs_submit_merged_bio(sbi, DATA, WRITE); + mutex_unlock(&fi->inmem_lock); + + filemap_fdatawait_range(inode->i_mapping, 0, LLONG_MAX); + f2fs_unlock_op(sbi); +} + /* * This function balances dirty node and dentry pages. * In addition, it controls garbage collection. @@ -2148,8 +2203,15 @@ int __init create_segment_manager_caches(void) sizeof(struct nat_entry_set)); if (!sit_entry_set_slab) goto destory_discard_entry; + + inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", + sizeof(struct inmem_pages)); + if (!inmem_entry_slab) + goto destroy_sit_entry_set; return 0; +destroy_sit_entry_set: + kmem_cache_destroy(sit_entry_set_slab); destory_discard_entry: kmem_cache_destroy(discard_entry_slab); fail: @@ -2160,4 +2222,5 @@ void destroy_segment_manager_caches(void) { kmem_cache_destroy(sit_entry_set_slab); kmem_cache_destroy(discard_entry_slab); + kmem_cache_destroy(inmem_entry_slab); } diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index afb73627a8ec..2495bec1c621 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -175,6 +175,11 @@ struct segment_allocation { void (*allocate_segment)(struct f2fs_sb_info *, int, bool); }; +struct inmem_pages { + struct list_head list; + struct page *page; +}; + struct sit_info { const struct segment_allocation *s_ops; @@ -504,7 +509,7 @@ static inline bool need_inplace_update(struct inode *inode) unsigned int policy = SM_I(sbi)->ipu_policy; /* IPU can be done only for the user data */ - if (S_ISDIR(inode->i_mode)) + if (S_ISDIR(inode->i_mode) || f2fs_is_atomic_file(inode)) return false; if (policy & (0x1 << F2FS_IPU_FORCE)) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index bb6b568d6ad4..41d6f700f4ee 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -373,6 +373,8 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) fi->i_advise = 0; rwlock_init(&fi->ext.ext_lock); init_rwsem(&fi->i_sem); + INIT_LIST_HEAD(&fi->inmem_pages); + mutex_init(&fi->inmem_lock); set_inode_flag(fi, FI_NEW_INODE); |
