From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754946Ab1AVBSh (ORCPT ); Fri, 21 Jan 2011 20:18:37 -0500 Received: from hera.kernel.org ([140.211.167.34]:45820 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752331Ab1AVBRo (ORCPT ); Fri, 21 Jan 2011 20:17:44 -0500 From: Jens Axboe To: jaxboe@fusionio.com, linux-kernel@vger.kernel.org Cc: hch@infradead.org Subject: [PATCH 08/10] read-ahead: use plugging Date: Sat, 22 Jan 2011 01:17:27 +0000 Message-Id: <1295659049-2688-9-git-send-email-jaxboe@fusionio.com> X-Mailer: git-send-email 1.7.3.5 In-Reply-To: <1295659049-2688-1-git-send-email-jaxboe@fusionio.com> References: <1295659049-2688-1-git-send-email-jaxboe@fusionio.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Sat, 22 Jan 2011 01:17:41 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Jens Axboe --- mm/readahead.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index cbddc3e..2c0cc48 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -109,9 +109,12 @@ EXPORT_SYMBOL(read_cache_pages); static int read_pages(struct address_space *mapping, struct file *filp, struct list_head *pages, unsigned nr_pages) { + struct blk_plug plug; unsigned page_idx; int ret; + blk_start_plug(&plug); + if (mapping->a_ops->readpages) { ret = mapping->a_ops->readpages(filp, mapping, pages, nr_pages); /* Clean up the remaining pages */ @@ -129,7 +132,10 @@ static int read_pages(struct address_space *mapping, struct file *filp, page_cache_release(page); } ret = 0; + out: + blk_finish_plug(&plug); + return ret; } -- 1.7.3.2.146.gca209