linux-kernel - Re: [PATCH 0/5] poll_wait: add mb() to fix theoretical race between waitqueue

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Message-ID: <64df3d49-1173-4078-a834-7eccaaac67fd@kernel.dk>
Date: Tue, 7 Jan 2025 15:55:34 -0700
From: Jens Axboe <axboe@...nel.dk>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
 Oleg Nesterov <oleg@...hat.com>
Cc: Christian Brauner <brauner@...nel.org>,
 Manfred Spraul <manfred@...orfullife.com>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Pavel Begunkov <asml.silence@...il.com>, WangYuli <wangyuli@...ontech.com>,
 linux-kernel@...r.kernel.org, io-uring@...r.kernel.org,
 netdev@...r.kernel.org
Subject: Re: [PATCH 0/5] poll_wait: add mb() to fix theoretical race between
 waitqueue_active() and .poll()

On 1/7/25 10:38 AM, Linus Torvalds wrote:
> On Tue, 7 Jan 2025 at 08:27, Oleg Nesterov <oleg@...hat.com> wrote:
>>
>> I misread fs/eventpoll.c, it has the same problem. And more __pollwait()-like
>> functions, for example p9_pollwait(). So 1/5 adds mb() into poll_wait(), not
>> into __pollwait().
> 
> Ack on all five patches, looks sane to me.
> 
> Christian, I'm assuming this goes through your tree? If not, holler,
> and I can take it directly.

Same, series looks good.

-- 
Jens Axboe