[PATCH] seqlock: Use while instead of if+goto in __read_seqcount_begin

[Muchun Song]

The creators of the C language gave us the while keyword. Let's use
that instead of synthesizing it from if+goto.

Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
 include/linux/seqlock.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index 8b97204f35a77..7bdea019814ce 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -125,12 +125,8 @@ static inline unsigned __read_seqcount_begin(const seqcount_t *s)
 {
 	unsigned ret;
 
-repeat:
-	ret = READ_ONCE(s->sequence);
-	if (unlikely(ret & 1)) {
+	while (unlikely((ret = READ_ONCE(s->sequence)) & 1))
 		cpu_relax();
-		goto repeat;
-	}
 	kcsan_atomic_next(KCSAN_SEQLOCK_REGION_MAX);
 	return ret;
 }
-- 
2.11.0