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authorWen Congyang <wency@cn.fujitsu.com>2013-02-22 19:32:58 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 20:50:12 -0500
commit24d335ca3606b610ec69c66a1e42760c96d89470 (patch)
tree62d6157cbb273c029ea1052690725037524cbbeb /mm
parent46c66c4b7ba0f9bb3e2ae3a3cfd40cd3472c8f80 (diff)
memory-hotplug: introduce new arch_remove_memory() for removing page table
For removing memory, we need to remove page tables. But it depends on architecture. So the patch introduce arch_remove_memory() for removing page table. Now it only calls __remove_pages(). Note: __remove_pages() for some archtecuture is not implemented (I don't know how to implement it for s390). Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Acked-by: 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: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Wu Jianguo <wujianguo@huawei.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory_hotplug.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index a776dbf3fa00..942b43f6d736 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1513,6 +1513,8 @@ repeat:
1513 /* remove memmap entry */ 1513 /* remove memmap entry */
1514 firmware_map_remove(start, start + size, "System RAM"); 1514 firmware_map_remove(start, start + size, "System RAM");
1515 1515
1516 arch_remove_memory(start, size);
1517
1516 unlock_memory_hotplug(); 1518 unlock_memory_hotplug();
1517 1519
1518 return 0; 1520 return 0;