[RFC] block: change to use atomic_inc_return_release()

[yalin wang]

Some arch define this atomic_inc_return_release() OP.

Signed-off-by: yalin wang <yalin.wang2010@xxxxxxxxx>
---
 block/bio.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/block/bio.c b/block/bio.c
index fbc558b..b251857 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -310,8 +310,7 @@ static void bio_chain_endio(struct bio *bio, int error)
 static inline void bio_inc_remaining(struct bio *bio)
 {
 	bio->bi_flags |= (1 << BIO_CHAIN);
-	smp_mb__before_atomic();
-	atomic_inc(&bio->__bi_remaining);
+	atomic_inc_return_release(&bio->__bi_remaining);
 }
 
 /**
-- 
1.9.1

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