linux-kernel - Re: [PATCH v6] mm: Add memory allocation watchdog kernel thread.

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Message-ID: <20170125142141.GT32377@dhcp22.suse.cz>
Date:   Wed, 25 Jan 2017 15:21:42 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:     akpm@...ux-foundation.org, mgorman@...e.de, hannes@...xchg.org,
        vdavydov.dev@...il.com, pmladek@...e.com,
        sergey.senozhatsky.work@...il.com, vegard.nossum@...cle.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6] mm: Add memory allocation watchdog kernel thread.

On Wed 25-01-17 23:03:43, Tetsuo Handa wrote:
> Andrew, what do you think about this version? There seems to be no objections.

Well, this is not true. My main objection still holds. I simply do not
think all the additional code is really worth it. Not enough to nack the
patch, though, of course. I am not questioning that the watchdog might
be useful for debugging. I just think that what we have currently tells
us enough to debug issues. Sure, you will tell that this is not
reliable, but I will argue that this should be fixed because that makes
sense regardless of the stall warning.
-- 
Michal Hocko
SUSE Labs