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dm raid1: flush workqueue before destruction

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We queue work on keventd queue --- so this queue must be flushed in the
destructor. Otherwise, keventd could access mirror_set after it was freed.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: stable@kernel.org
This commit is contained in:
Mikulas Patocka 2008-11-13 23:38:52 +00:00 committed by Alasdair G Kergon
parent 4ffaf869c7
commit 18776c7316
1 changed files with 1 additions and 0 deletions
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drivers/md/dm-raid1.c
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@ -1032,6 +1032,7 @@ static void mirror_dtr(struct dm_target *ti)
del_timer_sync(&ms->timer);
flush_workqueue(ms->kmirrord_wq);
flush_scheduled_work();
dm_kcopyd_client_destroy(ms->kcopyd_client);
destroy_workqueue(ms->kmirrord_wq);
free_context(ms, ti, ms->nr_mirrors);