mm: remove unevictable_migrate_page function

unevictable_migrate_page() in mm/internal.h is a relic of the since
removed UNEVICTABLE_LRU Kconfig option.  This patch removes the function
and open codes the test in migrate_page_copy().

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/migrate.c b/mm/migrate.c
index 2a0ea3ef509e..efddbf0926b2 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -288,8 +288,8 @@ static void migrate_page_copy(struct page *newpage, struct page *page)
         if (TestClearPageActive(page)) {
                 VM_BUG_ON(PageUnevictable(page));
                 SetPageActive(newpage);
-        } else
-                unevictable_migrate_page(newpage, page);
+        } else if (TestClearPageUnevictable(page))
+                SetPageUnevictable(newpage);
         if (PageChecked(page))
                 SetPageChecked(newpage);
         if (PageMappedToDisk(page))