From: Mel Gorman <mel@csn.ul.ie>
To: Johannes Weiner <jweiner@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Michal Hocko <mhocko@suse.cz>, Ying Han <yinghan@google.com>,
Balbir Singh <bsingharora@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Subject: Re: [patch 2/2] mm: vmscan: drop nr_force_scan[] from get_scan_count
Date: Wed, 17 Aug 2011 15:00:02 +0100 [thread overview]
Message-ID: <20110817140002.GD4484@csn.ul.ie> (raw)
In-Reply-To: <20110812065858.GA6916@redhat.com>
On Fri, Aug 12, 2011 at 08:58:58AM +0200, Johannes Weiner wrote:
> From: Johannes Weiner <jweiner@redhat.com>
> Subject: [patch] mm: vmscan: drop nr_force_scan[] from get_scan_count
>
> The nr_force_scan[] tuple holds the effective scan numbers for anon
> and file pages in case the situation called for a forced scan and the
> regularly calculated scan numbers turned out zero.
>
> However, the effective scan number can always be assumed to be
> SWAP_CLUSTER_MAX right before the division into anon and file. The
> numerators and denominator are properly set up for all cases, be it
> force scan for just file, just anon, or both, to do the right thing.
>
> Signed-off-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
--
Mel Gorman
SUSE Labs
WARNING: multiple messages have this Message-ID (diff)
From: Mel Gorman <mel@csn.ul.ie>
To: Johannes Weiner <jweiner@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Michal Hocko <mhocko@suse.cz>, Ying Han <yinghan@google.com>,
Balbir Singh <bsingharora@gmail.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Subject: Re: [patch 2/2] mm: vmscan: drop nr_force_scan[] from get_scan_count
Date: Wed, 17 Aug 2011 15:00:02 +0100 [thread overview]
Message-ID: <20110817140002.GD4484@csn.ul.ie> (raw)
In-Reply-To: <20110812065858.GA6916@redhat.com>
On Fri, Aug 12, 2011 at 08:58:58AM +0200, Johannes Weiner wrote:
> From: Johannes Weiner <jweiner@redhat.com>
> Subject: [patch] mm: vmscan: drop nr_force_scan[] from get_scan_count
>
> The nr_force_scan[] tuple holds the effective scan numbers for anon
> and file pages in case the situation called for a forced scan and the
> regularly calculated scan numbers turned out zero.
>
> However, the effective scan number can always be assumed to be
> SWAP_CLUSTER_MAX right before the division into anon and file. The
> numerators and denominator are properly set up for all cases, be it
> force scan for just file, just anon, or both, to do the right thing.
>
> Signed-off-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
--
Mel Gorman
SUSE Labs
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next prev parent reply other threads:[~2011-08-17 14:00 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-11 20:31 [patch 1/2] mm: vmscan: fix force-scanning small targets without swap Johannes Weiner
2011-08-11 20:31 ` Johannes Weiner
2011-08-11 20:31 ` [patch 2/2] mm: vmscan: drop nr_force_scan[] from get_scan_count Johannes Weiner
2011-08-11 20:31 ` Johannes Weiner
2011-08-11 23:44 ` Minchan Kim
2011-08-11 23:44 ` Minchan Kim
2011-08-12 6:58 ` Johannes Weiner
2011-08-12 6:58 ` Johannes Weiner
2011-08-12 7:04 ` Minchan Kim
2011-08-12 7:04 ` Minchan Kim
2011-08-12 13:33 ` Michal Hocko
2011-08-12 13:33 ` Michal Hocko
2011-08-17 14:00 ` Mel Gorman [this message]
2011-08-17 14:00 ` Mel Gorman
2011-08-17 1:12 ` KAMEZAWA Hiroyuki
2011-08-17 1:12 ` KAMEZAWA Hiroyuki
2011-08-11 23:16 ` [patch 1/2] mm: vmscan: fix force-scanning small targets without swap Minchan Kim
2011-08-11 23:16 ` Minchan Kim
2011-08-12 13:10 ` Michal Hocko
2011-08-12 13:10 ` Michal Hocko
2011-08-12 13:13 ` Michal Hocko
2011-08-12 13:13 ` Michal Hocko
2011-08-17 1:12 ` KAMEZAWA Hiroyuki
2011-08-17 1:12 ` KAMEZAWA Hiroyuki
2011-08-17 13:38 ` Mel Gorman
2011-08-17 13:38 ` Mel Gorman
2011-08-29 16:08 ` Johannes Weiner
2011-08-29 16:08 ` Johannes Weiner
2011-08-31 23:37 ` Andrew Morton
2011-08-31 23:37 ` Andrew Morton
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