From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Message-Id: <20051230224242.765.58222.sendpatchset@twins.localnet> In-Reply-To: <20051230223952.765.21096.sendpatchset@twins.localnet> References: <20051230223952.765.21096.sendpatchset@twins.localnet> Subject: [PATCH 3/9] clockpro-PG_test.patch Date: Fri, 30 Dec 2005 23:43:04 +0100 Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrew Morton , Peter Zijlstra , Christoph Lameter , Wu Fengguang , Nick Piggin , Marijn Meijles , Rik van Riel , Marcelo Tosatti List-ID: From: Peter Zijlstra Introduce a new PG_flag, needed for the clockpro work. Signed-off-by: Peter Zijlstra include/linux/page-flags.h | 8 ++++++++ mm/page_alloc.c | 3 ++- 2 files changed, 10 insertions(+), 1 deletion(-) Index: linux-2.6-git/include/linux/page-flags.h =================================================================== --- linux-2.6-git.orig/include/linux/page-flags.h +++ linux-2.6-git/include/linux/page-flags.h @@ -76,6 +76,8 @@ #define PG_nosave_free 18 /* Free, should not be written */ #define PG_uncached 19 /* Page has been mapped as uncached */ +#define PG_test 20 /* Page is in its test period */ + /* * Global page accounting. One instance per CPU. Only unsigned longs are * allowed. @@ -303,6 +305,12 @@ extern void __mod_page_state(unsigned lo #define SetPageUncached(page) set_bit(PG_uncached, &(page)->flags) #define ClearPageUncached(page) clear_bit(PG_uncached, &(page)->flags) +#define PageTest(page) test_bit(PG_test, &(page)->flags) +#define SetPageTest(page) set_bit(PG_test, &(page)->flags) +#define TestSetPageTest(page) test_and_set_bit(PG_test, &(page)->flags) +#define ClearPageTest(page) clear_bit(PG_test, &(page)->flags) +#define TestClearPageTest(page) test_and_clear_bit(PG_test, &(page)->flags) + struct page; /* forward declaration */ int test_clear_page_dirty(struct page *page); Index: linux-2.6-git/mm/page_alloc.c =================================================================== --- linux-2.6-git.orig/mm/page_alloc.c +++ linux-2.6-git/mm/page_alloc.c @@ -499,7 +499,8 @@ static int prep_new_page(struct page *pa page->flags &= ~(1 << PG_uptodate | 1 << PG_error | 1 << PG_referenced | 1 << PG_arch_1 | - 1 << PG_checked | 1 << PG_mappedtodisk); + 1 << PG_checked | 1 << PG_mappedtodisk | + 1 << PG_test); set_page_private(page, 0); set_page_refs(page, order); kernel_map_pages(page, 1 << order, 1); -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org