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dm rq: check kthread_run return for .request_fn request-based DM

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Check return value of kthread_run() in dm_old_init_request_queue().

Reported-by: Minfei Huang <mnghuan@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer 2016-07-06 09:06:37 -04:00
parent 602d1657c6
commit 7193a9defc
1 changed files with 2 additions and 0 deletions
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2
drivers/md/dm-rq.c
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@ -819,6 +819,8 @@ int dm_old_init_request_queue(struct mapped_device *md)
init_kthread_worker(&md->kworker); init_kthread_worker(&md->kworker);
md->kworker_task = kthread_run(kthread_worker_fn, &md->kworker, md->kworker_task = kthread_run(kthread_worker_fn, &md->kworker,
"kdmwork-%s", dm_device_name(md)); "kdmwork-%s", dm_device_name(md));
if (IS_ERR(md->kworker_task))
return PTR_ERR(md->kworker_task);
elv_register_queue(md->queue); elv_register_queue(md->queue);