The kernel provides a swap() that does the same thing as this code.
Signed-off-by: Dave Jones <dsj@xxxxxx>
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index b90cd3776f8e..626bf6c12992 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -566,17 +566,14 @@ static void __merge_refs(struct list_head *head, int mode)
struct __prelim_ref *pos2 = pos1, *tmp;
list_for_each_entry_safe_continue(pos2, tmp, head, list) {
- struct __prelim_ref *xchg, *ref1 = pos1, *ref2 = pos2;
+ struct __prelim_ref *ref1 = pos1, *ref2 = pos2;
struct extent_inode_elem *eie;
if (!ref_for_same_block(ref1, ref2))
continue;
if (mode == 1) {
- if (!ref1->parent && ref2->parent) {
- xchg = ref1;
- ref1 = ref2;
- ref2 = xchg;
- }
+ if (!ref1->parent && ref2->parent)
+ swap(ref1, ref1);
} else {
if (ref1->parent != ref2->parent)
continue;
--
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