linux-kernel - Re: [PATCH 1/2] mm,vmscan: Kill global shrinker lock.

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Message-ID: <20180126100830.GB5027@dhcp22.suse.cz>
Date:   Fri, 26 Jan 2018 11:08:30 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>
Cc:     Eric Wheeler <linux-mm@...ts.ewheeler.net>, hannes@...xchg.org,
        minchan@...nel.org, ying.huang@...el.com,
        mgorman@...hsingularity.net, vdavydov.dev@...il.com,
        akpm@...ux-foundation.org, shakeelb@...gle.com, gthelen@...gle.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mm,vmscan: Kill global shrinker lock.

On Fri 26-01-18 12:12:00, Tetsuo Handa wrote:
> Would you answer to Michal's questions
> 
>   Is this a permanent state or does the holder eventually releases the lock?
> 
>   Do you remember the last good kernel?
> 
> and my guess
> 
>   Since commit 0bcac06f27d75285 was not backported to 4.14-stable kernel,
>   this is unlikely the bug introduced by 0bcac06f27d75285 unless Eric
>   explicitly backported 0bcac06f27d75285.

Can we do that in the original email thread please. Conflating these two
things while we have no idea about the culprit is just mess.

-- 
Michal Hocko
SUSE Labs