linux-kernel - Re: [RFC 1/3] /dev/low_mem

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Message-ID: <CAOJsxLHhJf0VOzmGWTfLBKkjXvP5DwSbaFtpLnbt2wipfer4Gw@mail.gmail.com>
Date:	Thu, 19 Jan 2012 14:06:14 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	leonid.moiseichuk@...ia.com
Cc:	rhod@...hat.com, riel@...hat.com, minchan@...nel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	kamezawa.hiroyu@...fujitsu.com, mel@....ul.ie, rientjes@...gle.com,
	kosaki.motohiro@...il.com, hannes@...xchg.org, mtosatti@...hat.com,
	akpm@...ux-foundation.org, kosaki.motohiro@...fujitsu.com
Subject: Re: [RFC 1/3] /dev/low_mem_notify

On Thu, Jan 19, 2012 at 1:54 PM,  <leonid.moiseichuk@...ia.com> wrote:
>> On Thu, Jan 19, 2012 at 12:53 PM,  <leonid.moiseichuk@...ia.com> wrote:
>> > 6. I do not understand how work with attributes performed ( ) but it
>> > has sense to use mask and fill requested attributes using mask and
>> > callback table i.e. if free pages requested - they are reported, otherwise
>> not.
>>
>> That's how it works now in the git tree.
>
> Vmnotify.c has vmnotify_watch_event which collects fixed set of parameters.

That's would be a bug. We should check event_attrs like we do for NR_SWAP_PAGES.
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