* [2.6.23 PATCH 02/18] dm: bio_list prefetch removal
@ 2007-07-11 20:57 Alasdair G Kergon
0 siblings, 0 replies; only message in thread
From: Alasdair G Kergon @ 2007-07-11 20:57 UTC (permalink / raw)
To: Andrew Morton; +Cc: dm-devel, linux-kernel, Jens Axboe
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)
{
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