From: Yasunori Goto <y-goto@jp.fujitsu.com>
Date: Fri, 10 Mar 2006 01:33:51 +0000 (-0800)
Subject: [PATCH] memory hotadd: pgdat->node_present_pages fix
X-Git-Tag: v2.6.16-rc6~33
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2937be5895dbae23ff66767a2fc17793e63159c;p=linux-2.6

[PATCH] memory hotadd: pgdat->node_present_pages fix

When pages are onlined, not only zone->present_pages but also
pgdat->node_present_pages should be refreshed.

This parameter is used to show information at
/sys/device/system/node/nodeX/meminfo via si_meminfo_node().

So, it shows strange value for MemUsed which is calculated
(node_present_pages - all zones free pages).

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index a918f77f02..1fe76d963a 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -130,6 +130,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
 		onlined_pages++;
 	}
 	zone->present_pages += onlined_pages;
+	zone->zone_pgdat->node_present_pages += onlined_pages;
 
 	setup_per_zone_pages_min();