linux-kernel - [PATCH 4/5] v2 Update sysfs node routines for new sysfs memory directories

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Message-ID: <4C3F5628.6030809@austin.ibm.com>
Date:	Thu, 15 Jul 2010 13:40:40 -0500
From:	Nathan Fontenot <nfont@...tin.ibm.com>
To:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linuxppc-dev@...abs.org
CC:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: [PATCH 4/5] v2 Update sysfs node routines for new sysfs memory directories

Update the node sysfs directory routines that create
links to the memory sysfs directories under each node.
This update makes the node code aware that a memory sysfs
directory can cover multiple memory sections.

Signed-off-by: Nathan Fontenot <nfont@...tin.ibm.com>
---
 drivers/base/node.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

Index: linux-2.6/drivers/base/node.c
===================================================================
--- linux-2.6.orig/drivers/base/node.c	2010-07-15 09:54:06.000000000 -0500
+++ linux-2.6/drivers/base/node.c	2010-07-15 09:56:16.000000000 -0500
@@ -346,8 +346,10 @@
 		return -EFAULT;
 	if (!node_online(nid))
 		return 0;
-	sect_start_pfn = section_nr_to_pfn(mem_blk->phys_index);
-	sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1;
+
+	sect_start_pfn = section_nr_to_pfn(mem_blk->start_phys_index);
+	sect_end_pfn = section_nr_to_pfn(mem_blk->end_phys_index);
+	sect_end_pfn += PAGES_PER_SECTION - 1;
 	for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
 		int page_nid;
 
@@ -383,8 +385,10 @@
 	if (!unlinked_nodes)
 		return -ENOMEM;
 	nodes_clear(*unlinked_nodes);
-	sect_start_pfn = section_nr_to_pfn(mem_blk->phys_index);
-	sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1;
+
+	sect_start_pfn = section_nr_to_pfn(mem_blk->start_phys_index);
+	sect_end_pfn = section_nr_to_pfn(mem_blk->end_phys_index);
+	sect_end_pfn += PAGES_PER_SECTION - 1;
 	for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
 		int nid;
 

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