git.stricted.de - GitHub/MotorolaMobilityLLC/kernel-slsi.git/commit

author	Jens Axboe <axboe@fb.com>
	Tue, 16 Sep 2014 16:37:37 +0000 (10:37 -0600)
committer	Jens Axboe <axboe@fb.com>
	Mon, 22 Sep 2014 17:54:04 +0000 (11:54 -0600)
commit	538b75341835e3c2041ff066408de10d24fdc830
tree	6b7b60f296779302cc70d7c79e47b4dcc440a9be	tree \| snapshot (tar.gz zip)
parent	37504a3be90b69438426d74ccf467a9fe192932b	commit \| diff

blk-mq: request deadline must be visible before marking rq as started

When we start the request, we set the deadline and flip the bits
marking the request as started and non-complete. However, it's
important that the deadline store is ordered before flipping the
bits, otherwise we could have a small window where the request is
marked started but with an invalid deadline. This can confuse the
timeout handling.

Suggested-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>