bcache: stop writeback kthread and kworker when bch_cached_dev_run() failed
authorColy Li <colyli@suse.de>
Fri, 28 Jun 2019 11:59:45 +0000 (19:59 +0800)
committerJens Axboe <axboe@kernel.dk>
Fri, 28 Jun 2019 13:39:16 +0000 (07:39 -0600)
commit5c2a634cbfaf1971cb6453fe5f86d83585257790
treedbf29ffebf77a66916786454fb3d88b4a03138c5
parentf54d801dda14942dbefa00541d10603015b7859c
bcache: stop writeback kthread and kworker when bch_cached_dev_run() failed

In bch_cached_dev_attach() after bch_cached_dev_writeback_start()
called, the wrireback kthread and writeback rate update kworker of the
cached device are created, if the following bch_cached_dev_run()
failed, bch_cached_dev_attach() will return with -ENOMEM without
stopping the writeback related kthread and kworker.

This patch stops writeback kthread and writeback rate update kworker
before returning -ENOMEM if bch_cached_dev_run() returns error.

Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/md/bcache/super.c