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From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>, io-uring@vger.kernel.org
Subject: Re: [PATCHSET 0/3] io_uring: make POLL_ADD support multiple waitqs
Date: Tue, 11 Feb 2020 23:01:21 +0300
Message-ID: <c3fd3aa0-4358-6148-7486-ea52b410a5a6@gmail.com> (raw)
In-Reply-To: <20200210205650.14361-1-axboe@kernel.dk>

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On 10/02/2020 23:56, Jens Axboe wrote:
> As mentioned in the previous email, here are the three patches that add
> support for multiple waitqueues for polling with io_uring.
> 
> Patches 1-2 are just basic prep patches, and should not have any
> functional changes in them. Patch 3 adds support for allocating a new
> io_poll_iocb unit if we get multiple additions through our queue proc
> for the wait queues. This new 'poll' addition is queued up as well, and
> it grabs a reference to the original poll request.
> 
> Please do review, would love to get this (long standing) issue fixed as
> it's a real problem for various folks.
> 

I need to dig a bit deeper into poll to understand some moments, but there is a
question: don't we won't to support arbitrary number of waitqueues then?

-- 
Pavel Begunkov


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  parent reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-10 20:56 Jens Axboe
2020-02-10 20:56 ` [PATCH 1/3] io_uring: store io_kiocb in wait->private Jens Axboe
2020-02-10 20:56 ` [PATCH 2/3] io_uring: abstract out main poll wake handler Jens Axboe
2020-02-10 20:56 ` [PATCH 3/3] io_uring: allow POLL_ADD with double poll_wait() users Jens Axboe
2020-02-11 20:22   ` Pavel Begunkov
2020-02-11 20:27     ` Jens Axboe
2020-02-11 20:01 ` Pavel Begunkov [this message]
2020-02-11 20:06   ` [PATCHSET 0/3] io_uring: make POLL_ADD support multiple waitqs Jens Axboe

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