From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756677AbZDGMDs (ORCPT ); Tue, 7 Apr 2009 08:03:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753248AbZDGMBI (ORCPT ); Tue, 7 Apr 2009 08:01:08 -0400 Received: from mga03.intel.com ([143.182.124.21]:5914 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755558AbZDGMAz (ORCPT ); Tue, 7 Apr 2009 08:00:55 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.39,337,1235980800"; d="scan'208";a="128748921" Message-Id: <20090407115234.544982496@intel.com> References: <20090407115039.780820496@intel.com> User-Agent: quilt/0.46-1 Date: Tue, 07 Apr 2009 19:50:46 +0800 From: Wu Fengguang To: Andrew Morton Cc: Benjamin Herrenschmidt , Nick Piggin , Linus Torvalds , Wu Fengguang Cc: David Rientjes Cc: Hugh Dickins Cc: Ingo Molnar Cc: Lee Schermerhorn Cc: Mike Waychison Cc: Peter Zijlstra Cc: Rohit Seth Cc: Edwin Cc: "H. Peter Anvin" Cc: Ying Han Cc: LKML Cc: Cc: Subject: [PATCH 07/14] readahead: apply max_sane_readahead() limit in ondemand_readahead() Content-Disposition: inline; filename=readahead-sane-max.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Just in case someone aggressively set a huge readahead size. Cc: Nick Piggin Cc: Linus Torvalds Signed-off-by: Wu Fengguang --- mm/readahead.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- mm.orig/mm/readahead.c +++ mm/mm/readahead.c @@ -382,7 +382,7 @@ ondemand_readahead(struct address_space bool hit_readahead_marker, pgoff_t offset, unsigned long req_size) { - int max = ra->ra_pages; /* max readahead pages */ + unsigned long max = max_sane_readahead(ra->ra_pages); pgoff_t prev_offset; int sequential; --