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authorHugh Dickins <hugh@veritas.com>2009-01-06 14:39:24 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:02 -0800
commit6d91add09f4bad5f4d4233b13faa392f0c4b16be (patch)
tree26f77047b316dfc0879307fbfda84b15a199155f /mm/migrate.c
parent3c1d43787b48c798f44dc32a6e6deb5ca2da3e68 (diff)
mm: add Set,ClearPageSwapCache stubs
If we add NOOP stubs for SetPageSwapCache() and ClearPageSwapCache(), then we can remove the #ifdef CONFIG_SWAPs from mm/migrate.c. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
-rw-r--r--mm/migrate.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 60510306c44a..55373983c9c6 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -300,12 +300,10 @@ static int migrate_page_move_mapping(struct address_space *mapping,
* Now we know that no one else is looking at the page.
*/
get_page(newpage); /* add cache reference */
-#ifdef CONFIG_SWAP
if (PageSwapCache(page)) {
SetPageSwapCache(newpage);
set_page_private(newpage, page_private(page));
}
-#endif
radix_tree_replace_slot(pslot, newpage);
@@ -373,9 +371,7 @@ static void migrate_page_copy(struct page *newpage, struct page *page)
mlock_migrate_page(newpage, page);
-#ifdef CONFIG_SWAP
ClearPageSwapCache(page);
-#endif
ClearPagePrivate(page);
set_page_private(page, 0);
/* page->mapping contains a flag for PageAnon() */