@@ -507,7 +507,7 @@ static int __add_missing_keys(struct btrfs_fs_info *fs_info,
}
/*
- * merge two lists of backrefs and adjust counts accordingly
+ * merge backrefs and adjust counts accordingly
*
* mode = 1: merge identical keys, if key is set
* FIXME: if we add more keys in __add_prelim_ref, we can merge more here.
@@ -535,9 +535,9 @@ static void __merge_refs(struct list_head *head, int mode)
ref2 = list_entry(pos2, struct __prelim_ref, list);
+ if (!ref_for_same_block(ref1, ref2))
+ continue;
if (mode == 1) {
- if (!ref_for_same_block(ref1, ref2))
- continue;
if (!ref1->parent && ref2->parent) {
xchg = ref1;
ref1 = ref2;
Old __merge_refs() in backref.c will even merge refs whose root_id are different, which makes qgroup gives wrong result. Fix it by checking ref_for_same_block() before any mode specific works. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> --- fs/btrfs/backref.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)