From: Pavel Begunkov <[email protected]>
To: [email protected]
Cc: Jens Axboe <[email protected]>,
[email protected], Dylan Yudaken <[email protected]>
Subject: [PATCH 4/6] io_uring/iopoll: unify tw breaking logic
Date: Thu, 8 Sep 2022 16:56:55 +0100 [thread overview]
Message-ID: <d2fa8a44f8114f55a4807528da438cde93815360.1662652536.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>
Let's keep checks for whether to break the iopoll loop or not same for
normal and defer tw, this includes ->cached_cq_tail checks guarding
against polling more than asked for.
Signed-off-by: Pavel Begunkov <[email protected]>
---
io_uring/io_uring.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 8233a375e8c9..2fb5f1e78fb2 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -1428,21 +1428,21 @@ static int io_iopoll_check(struct io_ring_ctx *ctx, long min)
*/
if (wq_list_empty(&ctx->iopoll_list) ||
io_task_work_pending(ctx)) {
+ u32 tail = ctx->cached_cq_tail;
+
if (!llist_empty(&ctx->work_llist))
__io_run_local_work(ctx, true);
+
if (task_work_pending(current) ||
wq_list_empty(&ctx->iopoll_list)) {
- u32 tail = ctx->cached_cq_tail;
-
mutex_unlock(&ctx->uring_lock);
io_run_task_work();
mutex_lock(&ctx->uring_lock);
-
- /* some requests don't go through iopoll_list */
- if (tail != ctx->cached_cq_tail ||
- wq_list_empty(&ctx->iopoll_list))
- break;
}
+ /* some requests don't go through iopoll_list */
+ if (tail != ctx->cached_cq_tail ||
+ wq_list_empty(&ctx->iopoll_list))
+ break;
}
ret = io_do_iopoll(ctx, !min);
if (ret < 0)
--
2.37.2
next prev parent reply other threads:[~2022-09-08 15:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-08 15:56 [PATCH for-next 0/6] defer tw fixes and other cleanups Pavel Begunkov
2022-09-08 15:56 ` [PATCH 1/6] io_uring: further limit non-owner defer-tw cq waiting Pavel Begunkov
2022-09-08 16:39 ` Dylan Yudaken
2022-09-08 15:56 ` [PATCH 2/6] io_uring: disallow defer-tw run w/ no submitters Pavel Begunkov
2022-09-08 16:43 ` Dylan Yudaken
2022-09-08 15:56 ` [PATCH 3/6] io_uring/iopoll: fix unexpected returns Pavel Begunkov
2022-09-08 16:43 ` Dylan Yudaken
2022-09-08 15:56 ` Pavel Begunkov [this message]
2022-09-08 15:56 ` [PATCH 5/6] io_uring: add fast path for io_run_local_work() Pavel Begunkov
2022-09-08 16:44 ` Dylan Yudaken
2022-09-08 15:56 ` [PATCH 6/6] io_uring: remove unused return from io_disarm_next Pavel Begunkov
2022-09-08 21:23 ` [PATCH for-next 0/6] defer tw fixes and other cleanups Jens Axboe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d2fa8a44f8114f55a4807528da438cde93815360.1662652536.git.asml.silence@gmail.com \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox