The patch titled unevictable-lru-infrastructure: remove redundant page->mapping check has been removed from the -mm tree. Its filename was unevictable-lru-infrastructure-remove-redundant-page-mapping-check.patch This patch was dropped because it was folded into unevictable-lru-infrastructure.patch The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: unevictable-lru-infrastructure: remove redundant page->mapping check From: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Remove redundant mapping check. We'd be doing exactly what putback_lru_page() is doing. So, this code as always unnecessary, duplicate code. So, just let putback_lru_page() handle this condition and conditionally unlock_page(). Signed-off-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Acked-by: Lee Schermerhorn <Lee.Schermerhorn@xxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/migrate.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff -puN mm/migrate.c~unevictable-lru-infrastructure-remove-redundant-page-mapping-check mm/migrate.c --- a/mm/migrate.c~unevictable-lru-infrastructure-remove-redundant-page-mapping-check +++ a/mm/migrate.c @@ -713,13 +713,7 @@ unlock: * restored. */ list_del(&page->lru); - if (!page->mapping) { - VM_BUG_ON(page_count(page) != 1); - unlock_page(page); - put_page(page); /* just free the old page */ - goto end_migration; - } else - unlock = putback_lru_page(page); + unlock = putback_lru_page(page); } if (unlock) _ Patches currently in -mm which might be from nishimura@xxxxxxxxxxxxxxxxx are origin.patch unevictable-lru-infrastructure.patch unevictable-lru-infrastructure-remove-redundant-page-mapping-check.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html