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>

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 10ae5700ab1eae1bb3c1b8bc72be03c6918e2324..55ffcf44b909f0931ca206af3e09fa01bb93cfe7 100644 (file)
--- 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);