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 <[email protected]> Reviewed-by: Christoph Lameter <[email protected]> Acked-by: Hugh Dickins <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Dec 15, 2009 · 418b27e · 418b27e
1 parent 4eb2b1d
commit 418b27e
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Showing 2 changed files with 2 additions and 14 deletions.
diff --git a/mm/internal.h b/mm/internal.h
@@ -63,18 +63,6 @@ static inline unsigned long page_order(struct page *page)
 	return page_private(page);
 }
 
-/*
- * unevictable_migrate_page() called only from migrate_page_copy() to
- * migrate unevictable flag to new page.
- * Note that the old page has been isolated from the LRU lists at this
- * point so we don't need to worry about LRU statistics.
- */
-static inline void unevictable_migrate_page(struct page *new, struct page *old)
-{
-	if (TestClearPageUnevictable(old))
-		SetPageUnevictable(new);
-}
-
 #ifdef CONFIG_MMU
 extern long mlock_vma_pages_range(struct vm_area_struct *vma,
 			unsigned long start, unsigned long end);

diff --git 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))