diff options
| -rw-r--r-- | fs/btrfs/inode.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index bfb8e98d8c02..5ea1c392bbc7 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4046,11 +4046,6 @@ static int btrfs_read_locked_inode(struct btrfs_inode *inode, struct btrfs_path btrfs_set_inode_mapping_order(inode); cache_index: - ret = btrfs_init_file_extent_tree(inode); - if (ret) - goto out; - btrfs_inode_set_file_extent_range(inode, 0, - round_up(i_size_read(vfs_inode), fs_info->sectorsize)); /* * If we were modified in the current generation and evicted from memory * and then re-read we need to do a full sync since we don't have any @@ -4137,6 +4132,20 @@ cache_acl: btrfs_ino(inode), btrfs_root_id(root), ret); } + /* + * We don't need the path anymore, so release it to avoid holding a read + * lock on a leaf while calling btrfs_init_file_extent_tree(), which can + * allocate memory that triggers reclaim (GFP_KERNEL) and cause a locking + * dependency. + */ + btrfs_release_path(path); + + ret = btrfs_init_file_extent_tree(inode); + if (ret) + goto out; + btrfs_inode_set_file_extent_range(inode, 0, + round_up(i_size_read(vfs_inode), fs_info->sectorsize)); + if (!maybe_acls) cache_no_acl(vfs_inode); |