531b55cce9
[ Upstream commit d6f66210f4b1aa2f5944f0e34e0f8db44f499f92 ] Now use teardown_lock to serialize for time out and tear down. This may cause abnormal: first cancel all request in tear down, then time out may complete the request again, but the request may already be freed or restarted. To avoid race between time out and tear down, in tear down process, first we quiesce the queue, and then delete the timer and cancel the time out work for the queue. At the same time we need to delete teardown_lock. Signed-off-by: Chao Leng <lengchao@huawei.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org>