From a42f9d83b5c05dc6e678a1f0cd9767502c2c58de Mon Sep 17 00:00:00 2001 From: majianpeng Date: Mon, 2 Apr 2012 01:04:19 +1000 Subject: [PATCH] md/raid1:Remove unnecessary rcu_dereference(conf->mirrors[i].rdev). Because rde->nr_pending > 0,so can not remove this disk. And in any case, we aren't holding rcu_read_lock() Signed-off-by: majianpeng Signed-off-by: NeilBrown --- drivers/md/raid1.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 242440831b23..8c420f178603 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; -- 2.30.2