Commit f8749452 authored Mar 13, 2013 by Toshi Kani Committed by Linus Torvalds Mar 13, 2013

mm: remove_memory(): fix end_pfn setting



remove_memory() calls walk_memory_range() with [start_pfn, end_pfn), where
end_pfn is exclusive in this range.  Therefore, end_pfn needs to be set to
the next page of the end address.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Wu Jianguo <wujianguo@huawei.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent ebf47beb

mm/memory_hotplug.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1801,7 +1801,7 @@ int __ref remove_memory(int nid, u64 start, u64 size)
		int retry = 1;

		start_pfn = PFN_DOWN(start);
		end_pfn = start_pfn + PFN_DOWN(size);
		end_pfn = PFN_UP(start + size - 1);

		/*
		* When CONFIG_MEMCG is on, one memory block may be used by other

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