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io_uring: do task_work_run() during iopoll

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There are a lot of new users of task_work, and some of task_work_add()
may happen while we do io polling, thus make iopoll from time to time
to do task_work_run(), so it doesn't poll for sitting there reqs.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-06-28 12:52:37 +03:00 committed by Jens Axboe
parent 6795c5aba2
commit 3adfecaa64
1 changed files with 2 additions and 0 deletions
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2
fs/io_uring.c
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@ -2052,6 +2052,8 @@ static int io_iopoll_check(struct io_ring_ctx *ctx, unsigned *nr_events,
*/
if (!(++iters & 7)) {
mutex_unlock(&ctx->uring_lock);
if (current->task_works)
task_work_run();
mutex_lock(&ctx->uring_lock);
}