From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: linux-mm <linux-mm@kvack.org>
Subject: [RFC] peeling off zone from physical memory layout [8/10] power pc remove memory fix
Date: Fri, 03 Feb 2006 16:51:59 +0900 [thread overview]
Message-ID: <43E30B9F.1030506@jp.fujitsu.com> (raw)
This is a patch against remove_memory().
I think this patch is not very good, but remove_memory() will fail
in current kernel anyway.
Signed-Off-By: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Index: hogehoge/arch/powerpc/mm/mem.c
===================================================================
--- hogehoge.orig/arch/powerpc/mm/mem.c
+++ hogehoge/arch/powerpc/mm/mem.c
@@ -32,6 +32,7 @@
#include <linux/highmem.h>
#include <linux/initrd.h>
#include <linux/pagemap.h>
+#include <linux/memorymap.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
@@ -163,7 +164,7 @@ int __devinit remove_memory(u64 start, u
* not handling removing memory ranges that
* overlap multiple zones yet
*/
- if (end_pfn > (zone->zone_start_pfn + zone->spanned_pages))
+ if (page_zone(pfn_to_page(start_pfn)) != page_zone(pfn_to_page(end_pfn - 1))
goto overlap;
/* make sure it is NOT in RMO */
--
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reply other threads:[~2006-02-03 7:51 UTC|newest]
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