Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934373AbXLPMFo (ORCPT ); Sun, 16 Dec 2007 07:05:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932763AbXLPMEb (ORCPT ); Sun, 16 Dec 2007 07:04:31 -0500 Received: from smtp.ustc.edu.cn ([202.38.64.16]:60681 "HELO ustc.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S934070AbXLPME0 (ORCPT ); Sun, 16 Dec 2007 07:04:26 -0500 Message-ID: <397806669.85907@ustc.edu.cn> X-EYOUMAIL-SMTPAUTH: wfg@mail.ustc.edu.cn Message-Id: <20071216120418.787765636@mail.ustc.edu.cn> References: <20071216115927.986126305@mail.ustc.edu.cn> User-Agent: quilt/0.46-1 Date: Sun, 16 Dec 2007 19:59:37 +0800 From: Fengguang Wu To: Andrew Morton Cc: Linus Torvalds Cc: linux-kernel@vger.kernel.org Subject: [PATCH 9/9] readahead: call max_sane_readahead() in ondemand_readahead() Content-Disposition: inline; filename=readahead-check-max_sane_readahead2.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 992 Lines: 29 Apply the max_sane_readahead() limit in ondemand_readahead(). Just in case someone aggressively set a huge readahead size. Signed-off-by: Fengguang Wu --- mm/readahead.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- linux-2.6.24-rc4-mm1.orig/mm/readahead.c +++ linux-2.6.24-rc4-mm1/mm/readahead.c @@ -324,9 +324,9 @@ ondemand_readahead(struct address_space bool hit_readahead_marker, pgoff_t offset, unsigned long req_size) { - int max = ra->ra_pages; /* max readahead pages */ pgoff_t prev_offset; - int sequential; + int sequential; + int max = max_sane_readahead(ra->ra_pages); /* max readahead pages */ /* * It's the expected callback offset, assume sequential access. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/