diff options
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 74609b931ba5..ca5d968f4c37 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -456,6 +456,13 @@ static noinline int create_subvol(struct inode *dir, if (ret) return ret; + /* + * Don't create subvolume whose level is not zero. Or qgroup will be + * screwed up since it assume subvolme qgroup's level to be 0. + */ + if (btrfs_qgroup_level(objectid)) + return -ENOSPC; + btrfs_init_block_rsv(&block_rsv, BTRFS_BLOCK_RSV_TEMP); /* * The same as the snapshot creation, please see the comment @@ -1564,7 +1571,7 @@ static noinline int btrfs_ioctl_resize(struct file *file, goto out_free; } - do_div(new_size, root->sectorsize); + new_size = div_u64(new_size, root->sectorsize); new_size *= root->sectorsize; printk_in_rcu(KERN_INFO "BTRFS: new size for %s is %llu\n", @@ -2897,6 +2904,9 @@ static int btrfs_extent_same(struct inode *src, u64 loff, u64 len, if (src == dst) return -EINVAL; + if (len == 0) + return 0; + btrfs_double_lock(src, loff, dst, dst_loff, len); ret = extent_same_check_offsets(src, loff, len); @@ -3039,7 +3049,7 @@ out: static int check_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 disko) { - struct seq_list tree_mod_seq_elem = {}; + struct seq_list tree_mod_seq_elem = SEQ_LIST_INIT(tree_mod_seq_elem); struct ulist *roots; struct ulist_iterator uiter; struct ulist_node *root_node = NULL; @@ -3202,6 +3212,8 @@ static int btrfs_clone(struct inode *src, struct inode *inode, key.offset = off; while (1) { + u64 next_key_min_offset = key.offset + 1; + /* * note the key will change type as we walk through the * tree. @@ -3282,7 +3294,7 @@ process_slot: } else if (key.offset >= off + len) { break; } - + next_key_min_offset = key.offset + datal; size = btrfs_item_size_nr(leaf, slot); read_extent_buffer(leaf, buf, btrfs_item_ptr_offset(leaf, slot), @@ -3497,7 +3509,7 @@ process_slot: break; } btrfs_release_path(path); - key.offset++; + key.offset = next_key_min_offset; } ret = 0; @@ -3626,6 +3638,11 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, if (off + len == src->i_size) len = ALIGN(src->i_size, bs) - off; + if (len == 0) { + ret = 0; + goto out_unlock; + } + /* verify the end result is block aligned */ if (!IS_ALIGNED(off, bs) || !IS_ALIGNED(off + len, bs) || !IS_ALIGNED(destoff, bs)) @@ -4624,6 +4641,11 @@ static long btrfs_ioctl_qgroup_assign(struct file *file, void __user *arg) sa->src, sa->dst); } + /* update qgroup status and info */ + err = btrfs_run_qgroups(trans, root->fs_info); + if (err < 0) + btrfs_error(root->fs_info, ret, + "failed to update qgroup status and info\n"); err = btrfs_end_transaction(trans, root); if (err && !ret) ret = err; @@ -4669,8 +4691,7 @@ static long btrfs_ioctl_qgroup_create(struct file *file, void __user *arg) /* FIXME: check if the IDs really exist */ if (sa->create) { - ret = btrfs_create_qgroup(trans, root->fs_info, sa->qgroupid, - NULL); + ret = btrfs_create_qgroup(trans, root->fs_info, sa->qgroupid); } else { ret = btrfs_remove_qgroup(trans, root->fs_info, sa->qgroupid); } |
