linux-kernel - Re: [PATCH] tools/testing/selftests/vm/mlock2-tests: fix mlock2 false-negative errors

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Message-ID: <20200326064909.GB27965@dhcp22.suse.cz>
Date:   Thu, 26 Mar 2020 07:49:09 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Rafael Aquini <aquini@...hat.com>,
        Shakeel Butt <shakeelb@...gle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-kselftest@...r.kernel.org, shuah@...nel.org,
        Eric B Munson <emunson@...mai.com>
Subject: Re: [PATCH] tools/testing/selftests/vm/mlock2-tests: fix mlock2
 false-negative errors

On Wed 25-03-20 17:49:49, Andrew Morton wrote:
> On Tue, 24 Mar 2020 11:49:10 -0400 Rafael Aquini <aquini@...hat.com> wrote:
> 
> > Thanks Michal!
> > 
> >  
> > Acked-by: Rafael Aquini <aquini@...hat.com>
> 
> I'll add
> Fixes: 9c4e6b1a7027f ("mm, mlock, vmscan: no more skipping pagevecs")

Wouldn't be this misleading? It would suggest that this commit is
somehow incorrect. I would consider b3b0d09c7a23 ("selftests: vm: add
tests for lock on fault") to be a better fit.

> and cc:stable to this.  Any kernel which has 9c4e6b1a7027f will benefit
> from this change.

OK, makes sense with
Cc: stable # with 9c4e6b1a7027f applied
 
> We're getting quite late in the cycle now so I think I'll hold off
> merging this up until post-5.7-rc1.  It will still get into the stable
> trees, but a bit later.

No problem. Nothing really urget. Coincidentaly we've just had a report
from our partner about this very specific test failure for our
enterprise kernel as well. I will just backport the patch as it seems
nobody really objects to it.

Thanks!
-- 
Michal Hocko
SUSE Labs