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Date: Fri, 8 Jun 2012 09:57:09 +0300
Message-ID: <CAOJsxLEeHR8MLAGteN_noU9Ncc+Q4eMVhQO7yDwxLQTTXrjJog@mail.gmail.com>
Subject: Re: [PATCH 0/5] Some vmevent fixes...
From: Pekka Enberg <penberg@kernel.org>
To: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Cc: Anton Vorontsov <cbouatmailru@gmail.com>, Minchan Kim <minchan@kernel.org>,
        Leonid Moiseichuk <leonid.moiseichuk@nokia.com>,
        John Stultz <john.stultz@linaro.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org,
        patches@linaro.org, kernel-team@android.com
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On Fri, Jun 8, 2012 at 6:45 AM, KOSAKI Motohiro
<kosaki.motohiro@gmail.com> wrote:
> So, big design choice here. 1) vmevent is a just notification. it can't
> guarantee to prevent oom. or 2) to implement some trick (e.g. reserved
> memory for vmevent processes, kernel activity blocking until finish
> memory returing, etc)

Yes, vmevent is only for notification and will not *guarantee* OOM
prevention. It simply tries to provide hints early enough to the
userspace to so that OOM can be avoided if possible.
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