From: Minchan Kim <minchan.kim@gmail.com>
Date: Tue, 16 Jun 2009 22:32:50 +0000 (-0700)
Subject: page-allocator: reset wmark_min and inactive ratio of zone when hotplug happens
X-Git-Tag: v2.6.31-rc1~299^2~105
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bce7394a3ef82b8477952fbab838e4a6e8cb47d2;p=pandora-kernel.git

page-allocator: reset wmark_min and inactive ratio of zone when hotplug happens

Solve two problems.

Whenever memory hotplug sucessfully happens, zone->present_pages
have to be changed.

1) Now memory hotplug calls setup_per_zone_wmark_min only when
   online_pages called, not offline_pages.

   It breaks balance.

2) If zone->present_pages is changed, we also have to change
   zone->inactive_ratio.  That's because inactive_ratio depends on
   zone->present_pages.

Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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