From: Minchan Kim <minchan@kernel.org>
To: Glauber Costa <glommer@parallels.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Anton Vorontsov <anton.vorontsov@linaro.org>,
John Stultz <john.stultz@linaro.org>,
Pekka Enberg <penberg@kernel.org>,
Wu Fengguang <fengguang.wu@intel.com>,
Hugh Dickins <hughd@google.com>
Subject: Re: RFC: Easy-Reclaimable LRU list
Date: Tue, 26 Jun 2012 09:12:32 +0900 [thread overview]
Message-ID: <4FE8FE70.6050107@kernel.org> (raw)
In-Reply-To: <4FE82555.2010704@parallels.com>
On 06/25/2012 05:46 PM, Glauber Costa wrote:
> On 06/19/2012 09:49 AM, Minchan Kim wrote:
>> Hi everybody!
>>
>> Recently, there are some efforts to handle system memory pressure.
>>
>> 1) low memory notification - [1]
>> 2) fallocate(VOLATILE) - [2]
>> 3) fadvise(NOREUSE) - [3]
>>
>> For them, I would like to add new LRU list, aka "Ereclaimable" which
>> is opposite of "unevictable".
>> Reclaimable LRU list includes_easy_ reclaimable pages.
>> For example, easy reclaimable pages are following as.
>>
>> 1. invalidated but remained LRU list.
>> 2. pageout pages for reclaim(PG_reclaim pages)
>> 3. fadvise(NOREUSE)
>> 4. fallocate(VOLATILE)
>>
>> Their pages shouldn't stir normal LRU list and compaction might not
>> migrate them, even.
> What about other things moving memory like CMA ?
Sorry for not being able to understand your point.
Can you elaborate a bit more?
--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2012-06-26 0:12 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-19 5:49 RFC: Easy-Reclaimable LRU list Minchan Kim
2012-06-21 19:21 ` John Stultz
2012-06-22 6:57 ` Minchan Kim
2012-06-23 4:45 ` Kamezawa Hiroyuki
2012-06-23 15:53 ` Rik van Riel
2012-06-24 11:09 ` KOSAKI Motohiro
2012-06-25 0:15 ` Minchan Kim
2012-06-25 8:46 ` Glauber Costa
2012-06-26 0:12 ` Minchan Kim [this message]
2012-06-26 8:07 ` Glauber Costa
2012-06-25 10:24 ` Mel Gorman
2012-06-26 0:26 ` Minchan Kim
2012-07-17 16:03 ` Zheng Liu
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