From: Christoph Hellwig <hch@lst.de>
Date: Fri, 11 Mar 2016 16:34:53 +0000 (+0100)
Subject: block: bio_remaining_done() isn't unlikely
X-Git-Tag: v4.14-rc1~3615^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2b885517110cbe8724fef30363778b6284d0a428;p=platform%2Fkernel%2Flinux-rpi.git

block: bio_remaining_done() isn't unlikely

We use bio chaining during most I/Os these days due to the delayed
bio splitting.  Additionally XFS will start using it, and there is
a pending direct I/O rewrite also making heavy use for it.  Don't
pretend it's always unlikely, and let the branch predictor do it's
job instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/bio.c b/block/bio.c
index e4682ec..0fde6e0 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1746,7 +1746,7 @@ static inline bool bio_remaining_done(struct bio *bio)
 void bio_endio(struct bio *bio)
 {
 again:
-	if (unlikely(!bio_remaining_done(bio)))
+	if (!bio_remaining_done(bio))
 		return;
 
 	/*