diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2019-07-16 16:19:29 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-07-18 10:20:14 -0600 |
| commit | ac38297f7038cd5b80d66f8809c7bbf5b70031f3 (patch) | |
| tree | 2144d14a14682be1c068249731f6edcfda9e4ff4 /mm | |
| parent | d14a9b389a86a5154b704bc88ce8dd37c701456a (diff) | |
rq-qos: use a mb for got_token
Oleg noticed that our checking of data.got_token is unsafe in the
cleanup case, and should really use a memory barrier. Use a wmb on the
write side, and a rmb() on the read side. We don't need one in the main
loop since we're saved by set_current_state().
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions