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Date:   Tue, 05 May 2020 22:58:01 +0200
From:   Roman Penyaev <rpenyaev@suse.de>
To:     Andrew Morton <akpm@linux-foundation.org>
Cc:     Jason Baron <jbaron@akamai.com>,
        Khazhismel Kumykov <khazhy@google.com>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        stable@vger.kernel.org
Subject: Re: [PATCH 1/1] epoll: call final ep_events_available() check under
 the lock
In-Reply-To: <20200505130357.04566dee5501c3787105376f@linux-foundation.org>
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 <a9898eaefa85fa9c85e179ff162d5e8d@suse.de>
 <20200505130357.04566dee5501c3787105376f@linux-foundation.org>
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On 2020-05-05 22:03, Andrew Morton wrote:
> On Tue, 05 May 2020 10:42:05 +0200 Roman Penyaev <rpenyaev@suse.de> 
> wrote:
> 
>> May I ask you to remove "epoll: ensure ep_poll() doesn't miss wakeup
>> events" from your -mm queue? Jason lately found out that the patch
>> does not fully solve the problem and this one patch is a second
>> attempt to do things correctly in a different way (namely to do
>> the final check under the lock). Previous changes are not needed.
> 
> Where do we stand with Khazhismel's "eventpoll: fix missing wakeup for
> ovflist in ep_poll_callback"?
> 
> http://lkml.kernel.org/r/20200424190039.192373-1-khazhy@google.com

This one from Khazhismel is needed. Others are complementary to the
Khazhismel's, except the "epoll: ensure ep_poll() doesn't miss
wakeup events", which you've already removed.

Thanks.

--
Roman