Btrfs: fix to catch all errors when resolving indirect ref

We can only tolerate ENOENT here, for other errors, we should
return directly.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 10ae5700ab1e..55ffcf44b909 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -388,10 +388,16 @@ static int __resolve_indirect_refs(struct btrfs_fs_info *fs_info,
                         continue;
                 err = __resolve_indirect_ref(fs_info, path, time_seq, ref,
                                              parents, extent_item_pos);
-                if (err == -ENOMEM)
-                        goto out;
-                if (err)
+                /*
+                 * we can only tolerate ENOENT,otherwise,we should catch error
+                 * and return directly.
+                 */
+                if (err == -ENOENT) {
                         continue;
+                } else if (err) {
+                        ret = err;
+                        goto out;
+                }
 
                 /* we put the first parent into the ref at hand */
                 ULIST_ITER_INIT(&uiter);