1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 5f77166fd01..e887ee62b6d 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -193,7 +193,7 @@ static struct dentry *btrfs_get_parent(struct dentry *child)
         if (ret < 0)
                 goto fail;
 
-        BUG_ON(ret == 0);
+        BUG_ON(ret == 0); /* Key with offset of -1 found */
         if (path->slots[0] == 0) {
                 ret = -ENOENT;
                 goto fail;