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

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Message-ID: <alpine.LFD.2.02.1201190922390.3033@tux.localdomain>
Date:	Thu, 19 Jan 2012 09:25:03 +0200 (EET)
From:	Pekka Enberg <penberg@...nel.org>
To:	Ronen Hod <rhod@...hat.com>
cc:	leonid.moiseichuk@...ia.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, 19 Jan 2012, Ronen Hod wrote:
> I believe that it will be best if the kernel publishes an ideal 
> number_of_free_pages (in /proc/meminfo or whatever). Such number is easy to 
> work with since this is what applications do, they free pages. Applications 
> will be able to refer to this number from their garbage collector, or before 
> allocating memory also if they did not get a notification, and it is also 
> useful if several applications free memory at the same time.

Isn't

/proc/sys/vm/min_free_kbytes

pretty much just that?

 			Pekka
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