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authorThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>2010-10-26 14:21:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 16:52:05 -0700
commite4455abb50a19562dbfdc51a8424fda9b588bd6d (patch)
treeadd38aec00027e9a115778425a41d3d075a9ced6 /include
parentf19e77a3dc884510dba740caa6dee126b7d40156 (diff)
mm: only build per-node scan_unevictable functions when NUMA is enabled
Non-NUMA systems do never create these files anyway, since they are only created by driver subsystem when NUMA is configured. [akpm@linux-foundation.org: cleanup] Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/swap.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 7cdd63366f88..eba53e71d2cc 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);

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