From: Jens Axboe <axboe@kernel.dk>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>
Cc: Christian Brauner <brauner@kernel.org>,
Manfred Spraul <manfred@colorfullife.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Pavel Begunkov <asml.silence@gmail.com>,
WangYuli <wangyuli@uniontech.com>,
linux-kernel@vger.kernel.org, io-uring@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH 0/5] poll_wait: add mb() to fix theoretical race between waitqueue_active() and .poll()
Date: Tue, 7 Jan 2025 15:55:34 -0700 [thread overview]
Message-ID: <64df3d49-1173-4078-a834-7eccaaac67fd@kernel.dk> (raw)
In-Reply-To: <CAHk-=wgvpziaLOTNV9cbitHXf7Lz0ZAW+gstacZqJqRqR8h66A@mail.gmail.com>
On 1/7/25 10:38 AM, Linus Torvalds wrote:
> On Tue, 7 Jan 2025 at 08:27, Oleg Nesterov <oleg@redhat.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
next prev parent reply other threads:[~2025-01-07 22:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-07 16:26 [PATCH 0/5] poll_wait: add mb() to fix theoretical race between waitqueue_active() and .poll() Oleg Nesterov
2025-01-07 16:27 ` [PATCH 1/5] " Oleg Nesterov
2025-01-07 16:27 ` [PATCH 2/5] poll_wait: kill the obsolete wait_address check Oleg Nesterov
2025-01-07 16:27 ` [PATCH 3/5] io_uring_poll: kill the no longer necessary barrier after poll_wait() Oleg Nesterov
2025-01-07 16:27 ` [PATCH 4/5] sock_poll_wait: " Oleg Nesterov
2025-01-07 16:27 ` [PATCH 5/5] poll: kill poll_does_not_wait() Oleg Nesterov
2025-01-07 17:38 ` [PATCH 0/5] poll_wait: add mb() to fix theoretical race between waitqueue_active() and .poll() Linus Torvalds
2025-01-07 22:55 ` Jens Axboe [this message]
2025-01-10 10:56 ` Christian Brauner
2025-01-10 11:00 ` Christian Brauner
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