From: Johannes Weiner <jweiner@redhat.com>
To: Michal Hocko <mhocko@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
Balbir Singh <bsingharora@gmail.com>,
Ying Han <yinghan@google.com>, Greg Thelen <gthelen@google.com>,
Michel Lespinasse <walken@google.com>,
Rik van Riel <riel@redhat.com>,
Minchan Kim <minchan.kim@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 02/11] mm: vmscan: distinguish global reclaim from global LRU scanning
Date: Tue, 20 Sep 2011 10:52:19 +0200 [thread overview]
Message-ID: <20110920085219.GB11489@redhat.com> (raw)
In-Reply-To: <20110919132344.GE21847@tiehlicka.suse.cz>
On Mon, Sep 19, 2011 at 03:23:44PM +0200, Michal Hocko wrote:
> On Mon 12-09-11 12:57:19, Johannes Weiner wrote:
> > The traditional zone reclaim code is scanning the per-zone LRU lists
> > during direct reclaim and kswapd, and the per-zone per-memory cgroup
> > LRU lists when reclaiming on behalf of a memory cgroup limit.
> >
> > Subsequent patches will convert the traditional reclaim code to
> > reclaim exclusively from the per-memory cgroup LRU lists. As a
> > result, using the predicate for which LRU list is scanned will no
> > longer be appropriate to tell global reclaim from limit reclaim.
> >
> > This patch adds a global_reclaim() predicate to tell direct/kswapd
> > reclaim from memory cgroup limit reclaim and substitutes it in all
> > places where currently scanning_global_lru() is used for that.
>
> I am wondering about vmscan_swappiness. Shouldn't it use global_reclaim
> instead?
Thanks for noticing, you are right. Too many rebases...
Signed-off-by: Johannes Weiner <jweiner@redhat.com>
---
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 354f125..c2b0903 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1840,7 +1840,7 @@ static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan,
static int vmscan_swappiness(struct scan_control *sc)
{
- if (scanning_global_lru(sc))
+ if (global_reclaim(sc))
return vm_swappiness;
return mem_cgroup_swappiness(sc->mem_cgroup);
}
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next prev parent reply other threads:[~2011-09-20 8:52 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-12 10:57 [patch 0/11] mm: memcg naturalization -rc3 Johannes Weiner
2011-09-12 10:57 ` [patch 01/11] mm: memcg: consolidate hierarchy iteration primitives Johannes Weiner
2011-09-12 22:37 ` Kirill A. Shutemov
2011-09-13 5:40 ` Johannes Weiner
2011-09-19 13:06 ` Michal Hocko
2011-09-13 10:06 ` KAMEZAWA Hiroyuki
2011-09-19 12:53 ` Michal Hocko
2011-09-20 8:45 ` Johannes Weiner
2011-09-20 8:53 ` Michal Hocko
2011-09-12 10:57 ` [patch 02/11] mm: vmscan: distinguish global reclaim from global LRU scanning Johannes Weiner
2011-09-12 23:02 ` Kirill A. Shutemov
2011-09-13 5:48 ` Johannes Weiner
2011-09-13 10:07 ` KAMEZAWA Hiroyuki
2011-09-19 13:23 ` Michal Hocko
2011-09-19 13:46 ` Michal Hocko
2011-09-20 8:52 ` Johannes Weiner [this message]
2011-09-12 10:57 ` [patch 03/11] mm: vmscan: distinguish between memcg triggering reclaim and memcg being scanned Johannes Weiner
2011-09-13 10:23 ` KAMEZAWA Hiroyuki
2011-09-19 14:29 ` Michal Hocko
2011-09-20 8:58 ` Johannes Weiner
2011-09-20 9:17 ` Michal Hocko
2011-09-29 7:55 ` Johannes Weiner
2011-09-12 10:57 ` [patch 04/11] mm: memcg: per-priority per-zone hierarchy scan generations Johannes Weiner
2011-09-13 10:27 ` KAMEZAWA Hiroyuki
2011-09-13 11:03 ` Johannes Weiner
2011-09-14 0:55 ` KAMEZAWA Hiroyuki
2011-09-14 5:56 ` Johannes Weiner
2011-09-14 7:40 ` KAMEZAWA Hiroyuki
2011-09-20 8:15 ` Michal Hocko
2011-09-20 8:45 ` Michal Hocko
2011-09-20 9:10 ` Johannes Weiner
2011-09-20 12:37 ` Michal Hocko
2011-09-12 10:57 ` [patch 05/11] mm: move memcg hierarchy reclaim to generic reclaim code Johannes Weiner
2011-09-13 10:31 ` KAMEZAWA Hiroyuki
2011-09-20 13:09 ` Michal Hocko
2011-09-20 13:29 ` Johannes Weiner
2011-09-20 14:08 ` Michal Hocko
2011-09-12 10:57 ` [patch 06/11] mm: memcg: remove optimization of keeping the root_mem_cgroup LRU lists empty Johannes Weiner
2011-09-13 10:34 ` KAMEZAWA Hiroyuki
2011-09-20 15:02 ` Michal Hocko
2011-09-29 9:20 ` Johannes Weiner
2011-09-29 9:49 ` Michal Hocko
2011-09-12 10:57 ` [patch 07/11] mm: vmscan: convert unevictable page rescue scanner to per-memcg LRU lists Johannes Weiner
2011-09-13 10:37 ` KAMEZAWA Hiroyuki
2011-09-21 12:33 ` Michal Hocko
2011-09-21 13:47 ` Johannes Weiner
2011-09-21 14:08 ` Michal Hocko
2011-09-12 10:57 ` [patch 08/11] mm: vmscan: convert global reclaim " Johannes Weiner
2011-09-13 10:41 ` KAMEZAWA Hiroyuki
2011-09-21 13:10 ` Michal Hocko
2011-09-21 13:51 ` Johannes Weiner
2011-09-21 13:57 ` Michal Hocko
2011-09-12 10:57 ` [patch 09/11] mm: collect LRU list heads into struct lruvec Johannes Weiner
2011-09-13 10:43 ` KAMEZAWA Hiroyuki
2011-09-21 13:43 ` Michal Hocko
2011-09-21 15:15 ` Michal Hocko
2011-09-12 10:57 ` [patch 10/11] mm: make per-memcg LRU lists exclusive Johannes Weiner
2011-09-13 10:47 ` KAMEZAWA Hiroyuki
2011-09-21 15:24 ` Michal Hocko
2011-09-21 15:47 ` Johannes Weiner
2011-09-21 16:05 ` Michal Hocko
2011-09-12 10:57 ` [patch 11/11] mm: memcg: remove unused node/section info from pc->flags Johannes Weiner
2011-09-13 10:50 ` KAMEZAWA Hiroyuki
2011-09-21 15:32 ` Michal Hocko
2011-09-13 20:35 ` [patch 0/11] mm: memcg naturalization -rc3 Kirill A. Shutemov
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