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-rw-r--r--include/linux/swap.h10
-rw-r--r--mm/vmscan.c3
2 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 7cdd63366f8..eba53e71d2c 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -271,8 +271,18 @@ extern void scan_mapping_unevictable_pages(struct address_space *);
extern unsigned long scan_unevictable_pages;
extern int scan_unevictable_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
+#ifdef CONFIG_NUMA
extern int scan_unevictable_register_node(struct node *node);
extern void scan_unevictable_unregister_node(struct node *node);
+#else
+static inline int scan_unevictable_register_node(struct node *node)
+{
+ return 0;
+}
+static inline void scan_unevictable_unregister_node(struct node *node)
+{
+}
+#endif
extern int kswapd_run(int nid);
extern void kswapd_stop(int nid);
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 6cbc1aac23a..f5871ee5000 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2986,6 +2986,7 @@ int scan_unevictable_handler(struct ctl_table *table, int write,
return 0;
}
+#ifdef CONFIG_NUMA
/*
* per node 'scan_unevictable_pages' attribute. On demand re-scan of
* a specified node's per zone unevictable lists for evictable pages.
@@ -3032,4 +3033,4 @@ void scan_unevictable_unregister_node(struct node *node)
{
sysdev_remove_file(&node->sysdev, &attr_scan_unevictable_pages);
}
-
+#endif