From: Josef Bacik <jo...@toxicpanda.com> In case we get a spurious wakeup we need to make sure to re-set ourselves to TASK_UNINTERRUPTIBLE so we don't busy wait.
Reviewed-by: Oleg Nesterov <o...@redhat.com> Signed-off-by: Josef Bacik <jo...@toxicpanda.com> Signed-off-by: Jens Axboe <ax...@kernel.dk> Changes when porting to vz7: - original patch is patching block/blk-rq-qos.c:rq_qos_wait, but in vz7 similar hunk is in block/blk-wbt.c:__wbt_wait https://jira.sw.ru/browse/PSBM-141883 (cherry picked from commit d14a9b389a86a5154b704bc88ce8dd37c701456a) Signed-off-by: Pavel Tikhomirov <ptikhomi...@virtuozzo.com> --- block/blk-wbt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block/blk-wbt.c b/block/blk-wbt.c index f3c0841f009a..4c5b6899db71 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -599,6 +599,7 @@ static void __wbt_wait(struct rq_wb *rwb, enum wbt_flags wb_acct, spin_lock_irq(lock); has_sleeper = true; + set_current_state(TASK_UNINTERRUPTIBLE); } while (1); finish_wait(&rqw->wait, &data.wq); -- 2.37.1 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
