1 files changed, 7 insertions, 7 deletions

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 4febca4fc2de..b3896d5f233a 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -691,6 +691,7 @@ struct backref_node *build_backref_tree(struct reloc_control *rc,
         int cowonly;
         int ret;
         int err = 0;
+        bool need_check = true;
 
         path1 = btrfs_alloc_path();
         path2 = btrfs_alloc_path();
@@ -914,6 +915,7 @@ again:
                         cur->bytenr);
 
                 lower = cur;
+                need_check = true;
                 for (; level < BTRFS_MAX_LEVEL; level++) {
                         if (!path2->nodes[level]) {
                                 BUG_ON(btrfs_root_bytenr(&root->root_item) !=
@@ -957,14 +959,12 @@ again:
 
                                 /*
                                  * add the block to pending list if we
-                                 * need check its backrefs. only block
-                                 * at 'cur->level + 1' is added to the
-                                 * tail of pending list. this guarantees
-                                 * we check backrefs from lower level
-                                 * blocks to upper level blocks.
+                                 * need check its backrefs, we only do this once
+                                 * while walking up a tree as we will catch
+                                 * anything else later on.
                                  */
-                                if (!upper->checked &&
-                                    level == cur->level + 1) {
+                                if (!upper->checked && need_check) {
+                                        need_check = false;
                                         list_add_tail(&edge->list[UPPER],
                                                       &list);
                                 } else