From: Andreas Dilger Subject: Re: [PATCH -v2] ext4: Use inode preallocation with -o noextents Date: Thu, 05 Jun 2008 12:24:55 -0600 Message-ID: <20080605182455.GV2961@webber.adilger.int> References: <1211229262-11012-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <20080604022356.GA7094@mit.edu> <20080604040101.GA22348@skywalker> <20080605032220.GC10488@mit.edu> <20080605084329.GB8942@skywalker> <1212677741.3645.44.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7BIT Cc: "Aneesh Kumar K.V" , Theodore Tso , sandeen@redhat.com, linux-ext4@vger.kernel.org To: Mingming Cao Return-path: Received: from sca-es-mail-1.Sun.COM ([192.18.43.132]:38785 "EHLO sca-es-mail-1.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754089AbYFESZB (ORCPT ); Thu, 5 Jun 2008 14:25:01 -0400 Received: from fe-sfbay-09.sun.com ([192.18.43.129]) by sca-es-mail-1.sun.com (8.13.7+Sun/8.12.9) with ESMTP id m55IP1Zc001307 for ; Thu, 5 Jun 2008 11:25:01 -0700 (PDT) Received: from conversion-daemon.fe-sfbay-09.sun.com by fe-sfbay-09.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0K2000F0155QP100@fe-sfbay-09.sun.com> (original mail from adilger@sun.com) for linux-ext4@vger.kernel.org; Thu, 05 Jun 2008 11:25:01 -0700 (PDT) In-reply-to: <1212677741.3645.44.camel@localhost.localdomain> Content-disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: On Jun 05, 2008 07:55 -0700, Mingming Cao wrote: > > /** > > - * ext4_new_blocks_old() -- core block(s) allocation function > > + * ext4_orlov_new_blocks() -- core block(s) allocation function > > what is orlov means? this is core function for non extent based without > mballoc block allocation, right? Orlov is the name of the INODE allocator, not the block allocator. I'm not sure there is a name for the block allocator except "old" or "bitmap". In the future I suspect we won't want to keep this version at all, using the mballoc allocator even for block-mapped files, but it is useful for now for performance comparisons. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.