[RFC] memory hotremove patch take 2 [06/10] (ia64's remove_memory code)

[Yasunori Goto <y-goto@jp.fujitsu.com>]

Call offline pages from remove_memory().
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>

Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
 arch/ia64/mm/init.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletion(-)

Index: current_test/arch/ia64/mm/init.c
===================================================================
--- current_test.orig/arch/ia64/mm/init.c	2007-05-08 15:07:20.000000000 +0900
+++ current_test/arch/ia64/mm/init.c	2007-05-08 15:08:07.000000000 +0900
@@ -726,7 +726,18 @@ int arch_add_memory(int nid, u64 start, 
 
 int remove_memory(u64 start, u64 size)
 {
-	return -EINVAL;
+	unsigned long start_pfn, end_pfn;
+	unsigned long timeout = 120 * HZ;
+	int ret;
+	start_pfn = start >> PAGE_SHIFT;
+	end_pfn = start_pfn + (size >> PAGE_SHIFT);
+	ret = offline_pages(start_pfn, end_pfn, timeout);
+	if (ret)
+		goto out;
+	/* we can free mem_map at this point */
+out:
+	return ret;
 }
+
 EXPORT_SYMBOL_GPL(remove_memory);
 #endif

-- 
Yasunori Goto