The patch adds node_set_offline() and unregister_one_node() to remove_memory()
for removing sysfs file of node.
CC: David Rientjes <rient...@google.com>
CC: Jiang Liu <liu...@gmail.com>
CC: Len Brown <len.br...@intel.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Christoph Lameter <c...@linux.com>
Cc: Minchan Kim <minchan....@gmail.com>
CC: Andrew Morton <a...@linux-foundation.org>
CC: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com>
CC: Wen Congyang <we...@cn.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasu...@jp.fujitsu.com>
---
mm/memory_hotplug.c | 5 +++++
1 file changed, 5 insertions(+)
Index: linux-3.5-rc6/mm/memory_hotplug.c
===================================================================
--- linux-3.5-rc6.orig/mm/memory_hotplug.c 2012-07-18 18:25:11.036597977
+0900
+++ linux-3.5-rc6/mm/memory_hotplug.c 2012-07-18 18:25:54.860050109 +0900
@@ -1048,6 +1048,11 @@ int __ref remove_memory(int nid, u64 sta
/* remove memmap entry */
firmware_map_remove(start, start + size, "System RAM");
+ if (!node_present_pages(nid)) {
+ node_set_offline(nid);
+ unregister_one_node(nid);
+ }
+
__remove_pages(start >> PAGE_SHIFT, size >> PAGE_SHIFT);
out:
unlock_memory_hotplug();
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