Btrfs: return error to caller when btrfs_unlink() failes

When btrfs_unlink_inode() and btrfs_orphan_add() in btrfs_unlink()
are error, the error code is returned to the caller instead of
BUG_ON().

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 55bddffede73..db2057f262ad 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7201,7 +7201,8 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
 
         inode = lookup_free_space_inode(root, block_group, path);
         if (!IS_ERR(inode)) {
-                btrfs_orphan_add(trans, inode);
+                ret = btrfs_orphan_add(trans, inode);
+                BUG_ON(ret);
                 clear_nlink(inode);
                 /* One for the block groups ref */
                 spin_lock(&block_group->lock);