path: root/drivers/base
diff options
authorLee Schermerhorn <>2008-10-18 20:26:53 -0700
committerLinus Torvalds <>2008-10-20 08:52:31 -0700
commitaf936a1606246a10c145feac3770f6287f483f02 (patch)
tree8b1ca7fabb5c749ffdecd654519889c6c2ed2fb6 /drivers/base
parent64d6519dda3905dfb94d3f93c07c5f263f41813f (diff)
vmscan: unevictable LRU scan sysctl
This patch adds a function to scan individual or all zones' unevictable lists and move any pages that have become evictable onto the respective zone's inactive list, where shrink_inactive_list() will deal with them. Adds sysctl to scan all nodes, and per node attributes to individual nodes' zones. Kosaki: If evictable page found in unevictable lru when write /proc/sys/vm/scan_unevictable_pages, print filename and file offset of these pages. [ fix one CONFIG_MMU=n build error] [ adapt vmscan-unevictable-lru-scan-sysctl.patch to new sysfs API] Signed-off-by: Lee Schermerhorn <> Signed-off-by: Rik van Riel <> Signed-off-by: KOSAKI Motohiro <> Signed-off-by: KOSAKI Motohiro <> Signed-off-by: Hugh Dickins <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'drivers/base')
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c
index fb45d88a2446..f5207090885a 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -13,6 +13,7 @@
#include <linux/nodemask.h>
#include <linux/cpu.h>
#include <linux/device.h>
+#include <linux/swap.h>
static struct sysdev_class node_class = {
.name = "node",
@@ -191,6 +192,8 @@ int register_node(struct node *node, int num, struct node *parent)
sysdev_create_file(&node->sysdev, &attr_meminfo);
sysdev_create_file(&node->sysdev, &attr_numastat);
sysdev_create_file(&node->sysdev, &attr_distance);
+ scan_unevictable_register_node(node);
return error;
@@ -210,6 +213,8 @@ void unregister_node(struct node *node)
sysdev_remove_file(&node->sysdev, &attr_numastat);
sysdev_remove_file(&node->sysdev, &attr_distance);
+ scan_unevictable_unregister_node(node);