linux-kernel - [PATCH 004 of 6] md: Clean out unplug and other queue function on md shutdown

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Message-Id:  <1070220063505.16178@suse.de>
Date:	Tue, 20 Feb 2007 17:35:05 +1100
From:	NeilBrown <neilb@...e.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 004 of 6] md: Clean out unplug and other queue function on md shutdown


The mddev and queue might be used for another array which does not
set these, so they need to be cleared.

Signed-off-by: NeilBrown <neilb@...e.de>

### Diffstat output
 ./drivers/md/md.c |    3 +++
 1 file changed, 3 insertions(+)

diff .prev/drivers/md/md.c ./drivers/md/md.c
--- .prev/drivers/md/md.c	2007-02-20 17:13:54.000000000 +1100
+++ ./drivers/md/md.c	2007-02-20 17:13:08.000000000 +1100
@@ -3322,6 +3322,9 @@ static int do_md_stop(mddev_t * mddev, i
 				set_disk_ro(disk, 0);
 			blk_queue_make_request(mddev->queue, md_fail_request);
 			mddev->pers->stop(mddev);
+			mddev->queue->merge_bvec_fn = NULL;
+			mddev->queue->unplug_fn = NULL;
+			mddev->queue->issue_flush_fn = NULL;
 			if (mddev->pers->sync_request)
 				sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
 
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