From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 09 May 2007 12:10:50 +0900 From: Yasunori Goto Subject: [RFC] memory hotremove patch take 2 [03/10] (drain all pages) In-Reply-To: <20070509115506.B904.Y-GOTO@jp.fujitsu.com> References: <20070509115506.B904.Y-GOTO@jp.fujitsu.com> Message-Id: <20070509120337.B90A.Y-GOTO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Linux Kernel ML , linux-mm Cc: Andrew Morton , Christoph Lameter , Mel Gorman List-ID: This patch add function drain_all_pages(void) to drain all pages on per-cpu-freelist. Page isolation will catch them in free_one_page. Signed-Off-By: KAMEZAWA Hiroyuki Signed-off-by: Yasunori Goto include/linux/page_isolation.h | 1 + mm/page_alloc.c | 13 +++++++++++++ 2 files changed, 14 insertions(+) Index: current_test/mm/page_alloc.c =================================================================== --- current_test.orig/mm/page_alloc.c 2007-05-08 15:08:03.000000000 +0900 +++ current_test/mm/page_alloc.c 2007-05-08 15:08:33.000000000 +0900 @@ -1070,6 +1070,19 @@ void drain_all_local_pages(void) smp_call_function(smp_drain_local_pages, NULL, 0, 1); } +#ifdef CONFIG_PAGE_ISOLATION +static void drain_local_zone_pages(struct work_struct *work) +{ + drain_local_pages(); +} + +void drain_all_pages(void) +{ + schedule_on_each_cpu(drain_local_zone_pages); +} + +#endif /* CONFIG_PAGE_ISOLATION */ + /* * Free a 0-order page */ Index: current_test/include/linux/page_isolation.h =================================================================== --- current_test.orig/include/linux/page_isolation.h 2007-05-08 15:08:03.000000000 +0900 +++ current_test/include/linux/page_isolation.h 2007-05-08 15:08:33.000000000 +0900 @@ -39,6 +39,7 @@ extern void detach_isolation_info_zone(s extern void free_isolation_info(struct isolation_info *info); extern void unuse_all_isolated_pages(struct isolation_info *info); extern void free_all_isolated_pages(struct isolation_info *info); +extern void drain_all_pages(void); #else -- Yasunori Goto -- 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