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bcache: fix crash on shutdown in passthrough mode

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We never started the writeback thread in this case, so don't stop it.
This commit is contained in:
Slava Pestov 2014-05-20 12:20:28 -07:00 committed by Kent Overstreet
parent e5112201c1
commit a664d0f05a
1 changed files with 2 additions and 1 deletions
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3
drivers/md/bcache/super.c
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@ -1071,7 +1071,8 @@ static void cached_dev_free(struct closure *cl)
struct cached_dev *dc = container_of(cl, struct cached_dev, disk.cl);
cancel_delayed_work_sync(&dc->writeback_rate_update);
kthread_stop(dc->writeback_thread);
if (!IS_ERR_OR_NULL(dc->writeback_thread))
kthread_stop(dc->writeback_thread);
mutex_lock(&bch_register_lock);