Commit d14a9b38 authored Jul 16, 2019 by Josef Bacik Committed by Jens Axboe Jul 18, 2019

rq-qos: set ourself TASK_UNINTERRUPTIBLE after we schedule



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 <oleg@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 64e7ea87

block/blk-rq-qos.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -262,6 +262,7 @@ void rq_qos_wait(struct rq_wait rqw, void private_data,
		}
		io_schedule();
		has_sleeper = true;
		set_current_state(TASK_UNINTERRUPTIBLE);
		} while (1);
		finish_wait(&rqw->wait, &data.wq);
		}