mm/migrate.c: kill anon local variable from migrate_page_copy

commit 01b1ae63c2 ("memcg: simple migration handling") removed
mem_cgroup_uncharge_cache_page() call from migrate_page_copy.  Local
variable `anon' is now unused.

Signed-off-by: KOSAKI Motohiro <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Daisuke Nishimura <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/migrate.c b/mm/migrate.c
index edb6101ed774da0244cb129f332a6914b73465de..88000b89fc9a567768509926b7baf5dc44d2d7d7 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -275,8 +275,6 @@ static int migrate_page_move_mapping(struct address_space *mapping,
  */
 static void migrate_page_copy(struct page *newpage, struct page *page)
 {
-       int anon;
-
        copy_highpage(newpage, page);
 
        if (PageError(page))
@@ -313,8 +311,6 @@ static void migrate_page_copy(struct page *newpage, struct page *page)
        ClearPageSwapCache(page);
        ClearPagePrivate(page);
        set_page_private(page, 0);
-       /* page->mapping contains a flag for PageAnon() */
-       anon = PageAnon(page);
        page->mapping = NULL;
 
        /*