linux-kernel - Re: [PATCH 2/2] fs/epoll: restore waking from ep_done

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Message-Id: <20210405220912.b916e5f504cd2c11d7288cb2@linux-foundation.org>
Date:   Mon, 5 Apr 2021 22:09:12 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     jbaron@...mai.com, rpenyaev@...e.de, viro@...iv.linux.org.uk,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH 2/2] fs/epoll: restore waking from ep_done_scan()

On Mon, 5 Apr 2021 20:22:26 -0700 Davidlohr Bueso <dave@...olabs.net> wrote:

> On Mon, 05 Apr 2021, Andrew Morton wrote:
> 
> >Tricky.  339ddb53d373 was merged in December 2019.  So do we backport
> >this fix?  Could any userspace code be depending upon the
> >post-339ddb53d373 behavior?
> 
> As with previous trouble caused by this commit, I vote for restoring the behavior
> backporting the fix, basically the equivalent of adding (which was my intention):
> 
> Fixes: 339ddb53d373 ("fs/epoll: remove unnecessary wakeups of nested epoll")

OK, I added the Fixes: line and the cc:stable line.