linux-kernel - Re: [resend][PATCH 2/2] mm, mem-hotplug: update pcp->stat

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20101020113613.181E.A69D9226@jp.fujitsu.com>
Date:	Wed, 20 Oct 2010 11:36:59 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	kosaki.motohiro@...fujitsu.com,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Mel Gorman <mel@....ul.ie>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <cl@...ux-foundation.org>
Subject: Re: [resend][PATCH 2/2] mm, mem-hotplug: update pcp->stat_threshold when memory hotplug occur

> On Tue, 19 Oct 2010, KOSAKI Motohiro wrote:
> 
> > diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> > index 14ee899..222d8cc 100644
> > --- a/mm/page_alloc.c
> > +++ b/mm/page_alloc.c
> > @@ -51,6 +51,7 @@
> >  #include <linux/kmemleak.h>
> >  #include <linux/memory.h>
> >  #include <linux/compaction.h>
> > +#include <linux/vmstat.h>
> >  #include <trace/events/kmem.h>
> >  #include <linux/ftrace_event.h>
> >  
> > @@ -5013,6 +5014,8 @@ int __meminit init_per_zone_wmark_min(void)
> >  		min_free_kbytes = 128;
> >  	if (min_free_kbytes > 65536)
> >  		min_free_kbytes = 65536;
> > +
> > +	refresh_zone_stat_thresholds();
> >  	setup_per_zone_wmarks();
> >  	setup_per_zone_lowmem_reserve();
> >  	setup_per_zone_inactive_ratio();
> 
> setup_per_zone_wmarks() could change the min and low watermarks for a zone 
> when refresh_zone_stat_thresholds() would have used the old value.

Good catch. thanks.

my previous version removed zone->percpu_drift_mark completely. but
current one doesn't. so I need to fix this.





--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/