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From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>, io-uring@vger.kernel.org
Subject: [PATCH v2 2/9] io_uring: don't inflight-track linked timeouts
Date: Sun, 15 Aug 2021 10:40:19 +0100	[thread overview]
Message-ID: <e1b05cf47cb69df2305efdbee8cf7ba36f46c1a3.1628981736.git.asml.silence@gmail.com> (raw)
In-Reply-To: <cover.1628981736.git.asml.silence@gmail.com>

Tracking linked timeouts as infligh was needed to make sure that io-wq
is not destroyed by io_uring_cancel_generic() racing with
io_async_cancel_one() accessing it. Now, cancellations issued by linked
timeouts are done in the task context, so it's already synchronised.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 fs/io_uring.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 761bfb56ed3b..fde76d502fff 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5699,8 +5699,6 @@ static int io_timeout_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe,
 
 	data->mode = io_translate_timeout_mode(flags);
 	hrtimer_init(&data->timer, CLOCK_MONOTONIC, data->mode);
-	if (is_timeout_link)
-		io_req_track_inflight(req);
 	return 0;
 }
 
-- 
2.32.0


  parent reply	other threads:[~2021-08-15  9:41 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-15  9:40 [PATCH v2 for-next 0/5] 5.15 cleanups and optimisations Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 1/9] io_uring: optimise iowq refcounting Pavel Begunkov
2021-08-15  9:40 ` Pavel Begunkov [this message]
2021-08-15  9:40 ` [PATCH v2 3/9] io_uring: optimise initial ltimeout refcounting Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 4/9] io_uring: kill not necessary resubmit switch Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 5/9] io_uring: deduplicate cancellation code Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 6/9] io_uring: kill REQ_F_LTIMEOUT_ACTIVE Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 7/9] io_uring: simplify io_prep_linked_timeout Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 8/9] io_uring: cancel not-armed linked touts separately Pavel Begunkov
2021-08-15  9:40 ` [PATCH v2 9/9] io_uring: optimise io_prep_linked_timeout() Pavel Begunkov
2021-08-15 15:17 ` [PATCH v2 for-next 0/5] 5.15 cleanups and optimisations Jens Axboe

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