diff options
| author | Josef Bacik | 2019-07-16 22:19:28 +0200 |
|---|---|---|
| committer | Jens Axboe | 2019-07-18 18:20:13 +0200 |
| commit | d14a9b389a86a5154b704bc88ce8dd37c701456a (patch) | |
| tree | 9eb9a85600a97d69d33fb701f240d7d3f58f90db /block | |
| parent | rq-qos: don't reset has_sleepers on spurious wakeups (diff) | |
| download | kernel-qcow2-linux-d14a9b389a86a5154b704bc88ce8dd37c701456a.tar.gz kernel-qcow2-linux-d14a9b389a86a5154b704bc88ce8dd37c701456a.tar.xz kernel-qcow2-linux-d14a9b389a86a5154b704bc88ce8dd37c701456a.zip | |
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>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-rq-qos.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-rq-qos.c b/block/blk-rq-qos.c index 69a0f0b77795..c450b8952eae 100644 --- a/block/blk-rq-qos.c +++ b/block/blk-rq-qos.c @@ -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); } |