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Message-ID: <536BB354.2070402@linaro.org>
Date: Thu, 08 May 2014 09:39:48 -0700
From: John Stultz <john.stultz@linaro.org>
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To: Minchan Kim <minchan@kernel.org>
CC: LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Android Kernel Team <kernel-team@android.com>,
        Johannes Weiner <hannes@cmpxchg.org>, Robert Love <rlove@google.com>,
        Mel Gorman <mel@csn.ul.ie>, Hugh Dickins <hughd@google.com>,
        Dave Hansen <dave@sr71.net>, Rik van Riel <riel@redhat.com>,
        Dmitry Adamushko <dmitry.adamushko@gmail.com>,
        Neil Brown <neilb@suse.de>, Andrea Arcangeli <aarcange@redhat.com>,
        Mike Hommey <mh@glandium.org>, Taras Glek <tglek@mozilla.com>,
        Jan Kara <jack@suse.cz>, KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
        Michel Lespinasse <walken@google.com>,
        Keith Packard <keithp@keithp.com>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH 4/4] MADV_VOLATILE: Add page purging logic & SIGBUS trap
References: <1398806483-19122-1-git-send-email-john.stultz@linaro.org> <1398806483-19122-5-git-send-email-john.stultz@linaro.org> <20140508051559.GC5282@bbox>
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On 05/07/2014 10:16 PM, Minchan Kim wrote:
> On Tue, Apr 29, 2014 at 02:21:23PM -0700, John Stultz wrote:
>> +	update_hiwater_rss(mm);
>> +	if (PageAnon(page))
>> +		dec_mm_counter(mm, MM_ANONPAGES);
>> +	else
>> +		dec_mm_counter(mm, MM_FILEPAGES);
> We can add file-backed page part later when we move to suppport vrange-file.

Fair enough. That bit is easy to drop for now.

thanks
-john