From: Alasdair G Kergon <agk@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: dm-devel@redhat.com, linux-kernel@vger.kernel.org,
Jens Axboe <jens.axboe@oracle.com>
Subject: [2.6.23 PATCH 02/18] dm: bio_list prefetch removal
Date: Wed, 11 Jul 2007 21:57:01 +0100 [thread overview]
Message-ID: <20070711205701.GT24114@agk.fab.redhat.com> (raw)
From: Alasdair G Kergon <agk@redhat.com>
Remove dubious prefetch from bio_list_for_each() macro.
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---
drivers/md/dm-bio-list.h | 4 +---
1 files changed, 1 insertion(+), 3 deletions(-)
Index: linux/drivers/md/dm-bio-list.h
===================================================================
--- linux.orig/drivers/md/dm-bio-list.h 2007-07-11 21:37:36.000000000 +0100
+++ linux/drivers/md/dm-bio-list.h 2007-07-11 21:37:37.000000000 +0100
@@ -8,7 +8,6 @@
#define DM_BIO_LIST_H
#include <linux/bio.h>
-#include <linux/prefetch.h>
struct bio_list {
struct bio *head;
@@ -31,8 +30,7 @@ static inline void bio_list_init(struct
}
#define bio_list_for_each(bio, bl) \
- for (bio = (bl)->head; bio && ({ prefetch(bio->bi_next); 1; }); \
- bio = bio->bi_next)
+ for (bio = (bl)->head; bio; bio = bio->bi_next)
static inline unsigned bio_list_size(const struct bio_list *bl)
{
reply other threads:[~2007-07-11 20:57 UTC|newest]
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