From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761885AbXGWNTl (ORCPT ); Mon, 23 Jul 2007 09:19:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758847AbXGWNSM (ORCPT ); Mon, 23 Jul 2007 09:18:12 -0400 Received: from nigel.suspend2.net ([203.171.70.205]:57679 "EHLO nigel.suspend2.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756058AbXGWNSL (ORCPT ); Mon, 23 Jul 2007 09:18:11 -0400 From: Nigel Cunningham To: LKML Subject: [RFC] [PATCH 3/5] Dynamically allocated pageflags - PageSwapCache conversion. Date: Mon, 23 Jul 2007 23:15:58 +1000 User-Agent: KMail/1.9.6 References: <200707232305.12364.nigel@nigel.suspend2.net> In-Reply-To: <200707232305.12364.nigel@nigel.suspend2.net> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200707232315.58891.nigel@nigel.suspend2.net> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Switch PageSwapCache flag to use dynamically allocated pageflags. Signed-off-by: Nigel Cunningham include/linux/page-flags.h | 7 ++++--- mm/dyn_pageflags.c | 3 +++ 2 files changed, 7 insertions(+), 3 deletions(-) diff -ruNp 921-page-swap-cache-pageflag.patch-old/include/linux/page-flags.h 921-page-swap-cache-pageflag.patch-new/include/linux/page-flags.h --- 921-page-swap-cache-pageflag.patch-old/include/linux/page-flags.h 2007-07-23 22:13:16.000000000 +1000 +++ 921-page-swap-cache-pageflag.patch-new/include/linux/page-flags.h 2007-07-23 22:13:18.000000000 +1000 @@ -260,9 +260,10 @@ static inline void __ClearPageTail(struc #define __ClearPageHead(page) __ClearPageCompound(page) #ifdef CONFIG_SWAP -#define PageSwapCache(page) test_bit(PG_swapcache, &(page)->flags) -#define SetPageSwapCache(page) set_bit(PG_swapcache, &(page)->flags) -#define ClearPageSwapCache(page) clear_bit(PG_swapcache, &(page)->flags) +extern struct dyn_pageflags dyn_SwapCache_map; +#define PageSwapCache(page) test_dynpageflag(&dyn_SwapCache_map, page) +#define SetPageSwapCache(page) set_dynpageflag(&dyn_SwapCache_map, page) +#define ClearPageSwapCache(page) clear_dynpageflag(&dyn_SwapCache_map, page) #else #define PageSwapCache(page) 0 #endif diff -ruNp 921-page-swap-cache-pageflag.patch-old/mm/dyn_pageflags.c 921-page-swap-cache-pageflag.patch-new/mm/dyn_pageflags.c --- 921-page-swap-cache-pageflag.patch-old/mm/dyn_pageflags.c 2007-07-23 22:13:16.000000000 +1000 +++ 921-page-swap-cache-pageflag.patch-new/mm/dyn_pageflags.c 2007-07-23 22:13:18.000000000 +1000 @@ -114,6 +114,9 @@ static int dyn_pageflags_debug = 0; for (zone_nr = 0; zone_nr < MAX_NR_ZONES; zone_nr++) DECLARE_DYN_PAGEFLAGS(dyn_MappedToDisk_map); +#ifdef CONFIG_SWAP +DECLARE_DYN_PAGEFLAGS(dyn_SwapCache_map); +#endif /** * dump_pagemap: Display the contents of a bitmap for debugging purposes.