From: Alex Tomas Subject: Re: delalloc and reservation. Date: Mon, 29 Oct 2007 18:44:56 +0300 Message-ID: <4725FFF8.5060501@gmail.com> References: <4725AF5B.1000300@linux.vnet.ibm.com> <4725F8E6.2050500@gmail.com> <4725EF33.7050804@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=ISO-8859-1 Content-Transfer-Encoding: 7BIT Cc: Andreas Dilger , Eric Sandeen , Valerie Clement , Theodore Tso , Mingming Cao , linux-ext4 To: "Aneesh Kumar K.V" Return-path: Received: from gmp-eb-mail-1.sun.com ([192.18.6.21]:33953 "EHLO gmp-eb-mail-1.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753933AbXJ2Opu (ORCPT ); Mon, 29 Oct 2007 10:45:50 -0400 Received: from fe-emea-09.sun.com (gmp-eb-lb-2-fe3.eu.sun.com [192.18.6.12]) by gmp-eb-mail-1.sun.com (8.13.7+Sun/8.12.9) with ESMTP id l9TEjmOu025854 for ; Mon, 29 Oct 2007 14:45:48 GMT Received: from conversion-daemon.fe-emea-09.sun.com by fe-emea-09.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0JQO00A01G4XME00@fe-emea-09.sun.com> (original mail from bzzz.tomas@gmail.com) for linux-ext4@vger.kernel.org; Mon, 29 Oct 2007 14:45:47 +0000 (GMT) In-reply-to: <4725EF33.7050804@linux.vnet.ibm.com> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org sorry, I don't quite understand how do you observe this with nomballoc thanks, Alex Aneesh Kumar K.V wrote: > mballoc by default doesn't give the particular layout only if i force small > size to use inode preallocation i am hitting the problem. ie to change the > below line in ext4_mb_group_or_file > > if (ac->ac_o_ex.fe_len >= sbi->s_mb_small_req) > > to > if (ac->ac_o_ex.fe_len <= sbi->s_mb_small_req) > > Do you want to test the patch with this change ? > > We are observing the problem with delalloc and nomballoc. > > > -aneesh >