linux-kernel - Re: [PATCH 8/8] io_uring: skip redundant poll wakeups

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Message-ID: <42716256-70a5-4a8d-bcb8-4a3c0be87880@gmail.com>
Date: Fri, 31 Jan 2025 17:25:51 +0000
From: Pavel Begunkov <asml.silence@...il.com>
To: Max Kellermann <max.kellermann@...os.com>
Cc: axboe@...nel.dk, io-uring@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/8] io_uring: skip redundant poll wakeups

On 1/31/25 17:16, Max Kellermann wrote:
> On Fri, Jan 31, 2025 at 2:54 PM Pavel Begunkov <asml.silence@...il.com> wrote:
>>                                   |     // it's still 0, wake up is lost
> 
> I think I misunderstood how these polling functions in the kernel work
> - thanks for the explanation, Pavel. This one patch is indeed flawed,
> and I'll try to come up with something better.

No worries, it's too easy to get lost there, it takes me some
staring at the code every time as well.

-- 
Pavel Begunkov