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Commit f53e29fc authored by NeilBrown's avatar NeilBrown
Browse files

md/raid1: fix buglet in md_raid1_contested. 



Since we added 'replacement' capability, RAID1 can have twice
as many devices as ->raid_disks indicates.
So md_raid1_congested needs to check that many possible devices,
not just ->raid_disks many.

Signed-off-by: default avatarNeilBrown <neilb@suse.de>
parent db91ff55

drivers/md/raid1.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -624,7 +624,7 @@ int md_raid1_congested(struct mddev *mddev, int bits) 
		return 1;

		return 1;





	rcu_read_lock();

	rcu_read_lock();

	for (i = 0; i < conf->raid_disks; i++) {

	for (i = 0; i < conf->raid_disks * 2; i++) {

		struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev);

		struct md_rdev *rdev = rcu_dereference(conf->mirrors[i].rdev);

		if (rdev && !test_bit(Faulty, &rdev->flags)) {

		if (rdev && !test_bit(Faulty, &rdev->flags)) {

			struct request_queue *q = bdev_get_queue(rdev->bdev);

			struct request_queue *q = bdev_get_queue(rdev->bdev);