From 2b885517110cbe8724fef30363778b6284d0a428 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Fri, 11 Mar 2016 17:34:53 +0100
Subject: [PATCH] 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>
---
block/bio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/bio.c b/block/bio.c
index e4682ec11fcd1..0fde6e0e81f20 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;
/*
--
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