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 <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 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;