mm/ksm.c: make stable_node_dup() static

stable_node_dup() is local to the source and does not need to be in
global scope, so make it static.

Cleans up sparse warning:

  mm/ksm.c:1321:13: warning: symbol 'stable_node_dup' was not declared. Should it be static?

Link: http://lkml.kernel.org/r/20180206221005.12642-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/ksm.c b/mm/ksm.c
index adb5f99..7596e14 100644 (file)
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1318,10 +1318,10 @@ bool is_page_sharing_candidate(struct stable_node *stable_node)
        return __is_page_sharing_candidate(stable_node, 0);
 }
 
-struct page *stable_node_dup(struct stable_node **_stable_node_dup,
-                            struct stable_node **_stable_node,
-                            struct rb_root *root,
-                            bool prune_stale_stable_nodes)
+static struct page *stable_node_dup(struct stable_node **_stable_node_dup,
+                                   struct stable_node **_stable_node,
+                                   struct rb_root *root,
+                                   bool prune_stale_stable_nodes)
 {
        struct stable_node *dup, *found = NULL, *stable_node = *_stable_node;
        struct hlist_node *hlist_safe;