From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q585d48u173157 for ; Fri, 8 Jun 2012 00:39:05 -0500 Received: from ipmail07.adl2.internode.on.net (ipmail07.adl2.internode.on.net [150.101.137.131]) by cuda.sgi.com with ESMTP id tFfmyIsLHjRcaolB for ; Thu, 07 Jun 2012 22:39:02 -0700 (PDT) Received: from disappointment ([192.168.1.1]) by dastard with esmtp (Exim 4.76) (envelope-from ) id 1ScruA-0004h7-Ng for xfs@oss.sgi.com; Fri, 08 Jun 2012 15:38:38 +1000 Received: from dave by disappointment with local (Exim 4.77) (envelope-from ) id 1ScruA-0002vS-JW for xfs@oss.sgi.com; Fri, 08 Jun 2012 15:38:38 +1000 From: Dave Chinner Subject: [PATCH 0/9] xfs: discontiguous directory buffer support Date: Fri, 8 Jun 2012 15:38:25 +1000 Message-Id: <1339133914-11148-1-git-send-email-david@fromorbit.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com This is the latest version of the native xfs_buf discontiguous buffer support series. It has been rebased on 3.5-rc1 and Jan Kara's buffer initialisation/allocation fix ("Fix overallocation in xfs_buf_allocate_memory()"). The series introduces Dateh concept of buffer block maps, then adds APIs for using them, converts the internal xfs_buf method implementation to use them exclusively, adds support for discontiguous buffer log items in transactions, converts the directory code to use them and finally removes the xfs_dabuf from the picture. This greatly simplifies the directory buffer code and avoids copy-up/copy-down for discontiguous buffers. It also avoids needing to create and destroy a xfs-dabuf for every directory block that is read or written, greatly reducing buffer setup and teardown overhead and memory footprint. _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs