linux-kernel - [PATCH 6/7] Update sysfs node routines for new sysfs memory directories

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Message-ID: <4C3B3900.6050000@austin.ibm.com>
Date:	Mon, 12 Jul 2010 10:47:12 -0500
From:	Nathan Fontenot <nfont@...tin.ibm.com>
To:	linux-kernel@...r.kernel.org
CC:	linuxppc-dev@...abs.org
Subject: [PATCH 6/7] Update sysfs node routines for new sysfs memory directories

This patch updates the node sysfs directory routines that create
links to the memory sections 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	2010-07-09 14:36:53.000000000 -0500
+++ linux-2.6/drivers/base/node.c	2010-07-09 14:38:22.000000000 -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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