From: "majianpeng" <majianpeng@gmail.com>
To: Neil Brown <neilb@suse.de>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: md/raid1:Remove unnecessary rcu_dereference(conf->mirrors[i].rdev). Because rde->nr_pending > 0,so can not remove this disk.
Date: Wed, 28 Mar 2012 19:46:56 +0800 [thread overview]
Message-ID: <201203281935226256403@gmail.com> (raw)
From 2d433ec2d351119afac6b57caa6cdec2197c0396 Mon Sep 17 00:00:00 2001
From: majianpeng <majianpeng@gmail.com>
Date: Wed, 28 Mar 2012 19:30:36 +0800
Subject: [PATCH] md/raid1:Remove unnecessary rcu_dereference(conf->mirrors[i].rdev). Because
rde->nr_pending > 0,so can not remove this disk.
Signed-off-by: majianpeng <majianpeng@gmail.com>
---
drivers/md/raid1.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 4a40a20..f112782 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2386,8 +2386,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipp
int ok = 1;
for (i = 0 ; i < conf->raid_disks * 2 ; i++)
if (r1_bio->bios[i]->bi_end_io == end_sync_write) {
- struct md_rdev *rdev =
- rcu_dereference(conf->mirrors[i].rdev);
+ struct md_rdev *rdev = conf->mirrors[i].rdev;
ok = rdev_set_badblocks(rdev, sector_nr,
min_bad, 0
) && ok;
--
1.7.5.4
--------------
majianpeng
2012-03-28
next reply other threads:[~2012-03-28 11:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-28 11:46 majianpeng [this message]
2012-04-02 1:03 ` md/raid1:Remove unnecessary rcu_dereference(conf->mirrors[i].rdev). Because rde->nr_pending > 0,so can not remove this disk NeilBrown
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