btrfs_unlink() uses btrfs_lookup_inode_ref() to look up inode_ref but forget inode_extref case.
Let btrfs_unlink() call btrfs_lookup_inode_extref() if inode_ref is found and EXTENDED_IREF feature is enabled. Fixes: 0cc75eddd093 ("btrfs-progs: Add btrfs_unlink() and btrfs_add_link() functions.") Signed-off-by: Su Yue <suy.f...@cn.fujitsu.com> Reviewed-by: Qu Wenruo <w...@suse.com> --- inode.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/inode.c b/inode.c index 2398bca4a109..598ad0ab6b4c 100644 --- a/inode.c +++ b/inode.c @@ -277,6 +277,7 @@ int btrfs_unlink(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_key key; struct btrfs_inode_item *inode_item; struct btrfs_inode_ref *inode_ref; + struct btrfs_inode_extref *inode_extref = NULL; struct btrfs_dir_item *dir_item; u64 inode_size; u32 nlinks; @@ -296,7 +297,18 @@ int btrfs_unlink(struct btrfs_trans_handle *trans, struct btrfs_root *root, ret = PTR_ERR(inode_ref); goto out; } - if (inode_ref) + + if (!inode_ref && btrfs_fs_incompat(root->fs_info, EXTENDED_IREF)) { + btrfs_release_path(path); + inode_extref = btrfs_lookup_inode_extref(trans, root, path, + name, namelen, ino, parent_ino, 0); + if (IS_ERR(inode_extref)) { + ret = PTR_ERR(inode_extref); + goto out; + } + } + + if (inode_ref || inode_extref) del_inode_ref = 1; btrfs_release_path(path); -- 2.17.1