From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753966Ab0LVPeJ (ORCPT ); Wed, 22 Dec 2010 10:34:09 -0500 Received: from mail-iw0-f174.google.com ([209.85.214.174]:33013 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753724Ab0LVPeH (ORCPT ); Wed, 22 Dec 2010 10:34:07 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=DruAlooJYnFF+LMHAXVUVbNEL3YDNQw+PKCmwmOtCdO1ZfkTUarkGqz4RfXT+0DSjb eQIlPvDVEeLH1MOdeIbIkcJYB1WxOqVi5Mq0m/R4Jc9Z0tURSxNDQKqLNRxG5d7of9kO rMeB23GI/zwmqwbD25RSG+YW9eZbDkSryqrjs= From: Minchan Kim To: Andrew Morton Cc: linux-mm , LKML , KAMEZAWA Hiroyuki , Minchan Kim , Dan Magenheimer , Andi Kleen , Nick Piggin , Al Viro Subject: [PATCH 5/7] truncate: Change remove_from_page_cache Date: Thu, 23 Dec 2010 00:32:47 +0900 Message-Id: X-Mailer: git-send-email 1.7.0.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series changes remove_from_page_cache's page ref counting rule. Page cache ref count is decreased in delete_from_page_cache. So we don't need decreasing page reference by caller. Cc: Dan Magenheimer Cc: Andi Kleen Cc: Nick Piggin Cc: Al Viro Cc: linux-mm@kvack.org Signed-off-by: Minchan Kim Reviewed-by: KAMEZAWA Hiroyuki --- mm/truncate.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/mm/truncate.c b/mm/truncate.c index 9ee5673..3adb9c0 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -108,13 +108,12 @@ truncate_complete_page(struct address_space *mapping, struct page *page) cancel_dirty_page(page, PAGE_CACHE_SIZE); clear_page_mlock(page); - remove_from_page_cache(page); + delete_from_page_cache(page); ClearPageMappedToDisk(page); /* this must be after the remove_from_page_cache which * calls cleancache_put_page (and note page->mapping is now NULL) */ cleancache_flush_page(mapping, page); - page_cache_release(page); /* pagecache ref */ return 0; } -- 1.7.0.4