1 files changed, 1 insertions, 0 deletions

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 2b88439c2ee8..455a6b2fd539 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -589,6 +589,7 @@ static void __merge_refs(struct list_head *head, int mode)
 
                         list_del(&ref2->list);
                         kmem_cache_free(btrfs_prelim_ref_cache, ref2);
+                        cond_resched();
                 }
 
         }