linux-kernel - Re: [patch v3] mm, oom: fix unnecessary killing of additional processes

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Message-Id: <201807040226.w642Qk6k001082@www262.sakura.ne.jp>
Date:   Wed, 04 Jul 2018 11:26:46 +0900
From:   penguin-kernel@...ove.sakura.ne.jp
To:     David Rientjes <rientjes@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [patch v3] mm, oom: fix unnecessary killing of additional processes

David Rientjes wrote:
> Ping?
> 
> This can be something that can easily be removed if it becomes obsoleted 
> because the oom reaper is always able to free memory to the extent of 
> exit_mmap().  I argue that it cannot, because it cannot do free_pgtables() 
> for large amounts of virtual memory, but am fine to be proved wrong.

This is "[PATCH 3/8] mm,oom: Fix unnecessary killing of additional processes." in my series.

> 
> In the meantime, however, this patch should introduce no significant 
> change in functionality and the only interface it is added is in debugfs 
> and can easily be removed if it is obsoleted.
> 
> The work to make the oom reaper more effective or realible can still 
> continue with this patch.
>