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Commit 6d399783 authored by Shaohua Li's avatar Shaohua Li
Browse files

md/raid10: submit bio directly to replacement disk 



Commit 57c67df4(md/raid10: submit IO from originating thread instead of
md thread) submits bio directly for normal disks but not for replacement
disks. There is no point we shouldn't do this for replacement disks.

Cc: NeilBrown <neilb@suse.com>
Signed-off-by: default avatarShaohua Li <shli@fb.com>
parent ea6200e8

drivers/md/raid10.c

+16 −3
Original line number Diff line number Diff line
@@ -1477,11 +1477,24 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio, 
			mbio->bi_bdev = (void*)rdev;



			atomic_inc(&r10_bio->remaining);



			cb = blk_check_plugged(raid10_unplug, mddev,

					       sizeof(*plug));

			if (cb)

				plug = container_of(cb, struct raid10_plug_cb,

						    cb);

			else

				plug = NULL;

			spin_lock_irqsave(&conf->device_lock, flags);

			if (plug) {

				bio_list_add(&plug->pending, mbio);

				plug->pending_cnt++;

			} else {

				bio_list_add(&conf->pending_bio_list, mbio);

				conf->pending_count++;

			}

			spin_unlock_irqrestore(&conf->device_lock, flags);

			if (!mddev_check_plugged(mddev))

			if (!plug)

				md_wakeup_thread(mddev->thread);

		}

	}