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From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH 09/10] io_uring: do task_work_run() during iopoll
Date: Sun, 28 Jun 2020 12:52:37 +0300	[thread overview]
Message-ID: <14af64712d6f80c457775ad2c972858e89359b3f.1593337097.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>

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 <[email protected]>
---
 fs/io_uring.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 79d5680219d1..75ec0d952cb5 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -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);
 		}
 
-- 
2.24.0


  parent reply	other threads:[~2020-06-28  9:54 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-28  9:52 [PATCH 00/10] some fixing + refactoring batch-free Pavel Begunkov
2020-06-28  9:52 ` [PATCH 01/10] io_uring: fix refs underflow in io_iopoll_queue() Pavel Begunkov
2020-06-28  9:52 ` [PATCH 02/10] io_uring: remove inflight batching in free_many() Pavel Begunkov
2020-06-28  9:52 ` [PATCH 03/10] io_uring: dismantle req early and remove need_iter Pavel Begunkov
2020-06-28  9:52 ` [PATCH 04/10] io_uring: batch-free linked reqs as well Pavel Begunkov
2020-06-28  9:52 ` [PATCH 05/10] io_uring: cosmetic changes for batch free Pavel Begunkov
2020-06-28  9:52 ` [PATCH 06/10] io_uring: kill REQ_F_LINK_NEXT Pavel Begunkov
2020-06-28  9:52 ` [PATCH 07/10] io_uring: clean up req->result setting by rw Pavel Begunkov
2020-06-28  9:52 ` [PATCH 08/10] io_uring: fix missing wake_up io_rw_reissue() Pavel Begunkov
2020-06-28 14:12   ` Jens Axboe
2020-06-28 14:48     ` Pavel Begunkov
2020-06-28  9:52 ` Pavel Begunkov [this message]
2020-06-28  9:52 ` [PATCH 10/10] io_uring: fix iopoll -EAGAIN handling Pavel Begunkov
2020-06-28 14:09 ` [PATCH 00/10] some fixing + refactoring batch-free Jens Axboe

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