From patchwork Thu Apr 14 21:19:02 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Magenheimer X-Patchwork-Id: 91302 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 25378B6FDE for ; Fri, 15 Apr 2011 07:21:54 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753439Ab1DNVVu (ORCPT ); Thu, 14 Apr 2011 17:21:50 -0400 Received: from rcsinet10.oracle.com ([148.87.113.121]:26533 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753357Ab1DNVVs (ORCPT ); Thu, 14 Apr 2011 17:21:48 -0400 Received: from rcsinet13.oracle.com (rcsinet13.oracle.com [148.87.113.125]) by rcsinet10.oracle.com (Switch-3.4.2/Switch-3.4.2) with ESMTP id p3ELL6PA007748 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 14 Apr 2011 21:21:07 GMT Received: from acsmt356.oracle.com (acsmt356.oracle.com [141.146.40.156]) by rcsinet13.oracle.com (Switch-3.4.2/Switch-3.4.1) with ESMTP id p3ELL3QZ002208 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 14 Apr 2011 21:21:04 GMT Received: from ca-server1.us.oracle.com (ca-server1.us.oracle.com [139.185.48.5]) by acsmt356.oracle.com (8.12.11.20060308/8.12.11) with ESMTP id p3ELJ21g031286; Thu, 14 Apr 2011 16:19:02 -0500 Received: from dmagenhe by ca-server1.us.oracle.com with local (Exim 4.69) (envelope-from ) id 1QATwM-0007Eh-MZ; Thu, 14 Apr 2011 14:19:02 -0700 Date: Thu, 14 Apr 2011 14:19:02 -0700 From: Dan Magenheimer To: chris.mason@oracle.com, viro@zeniv.linux.org.uk, akpm@linux-foundation.org, adilger.kernel@dilger.ca, tytso@mit.edu, mfasheh@suse.com, jlbec@evilplan.org, matthew@wil.cx, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, ocfs2-devel@oss.oracle.com, linux-mm@kvack.org, hch@infradead.org, ngupta@vflare.org, jeremy@goop.org, JBeulich@novell.com, kurt.hackel@oracle.com, npiggin@kernel.dk, dave.mccracken@oracle.com, riel@redhat.com, avi@redhat.com, konrad.wilk@oracle.com, dan.magenheimer@oracle.com, mel@csn.ul.ie, yinghan@google.com, gthelen@google.com, torvalds@linux-foundation.org Subject: [PATCH V8 7/8] ext4: add cleancache support Message-ID: <20110414211902.GA27813@ca-server1.us.oracle.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.16 (2007-06-11) X-Source-IP: acsmt356.oracle.com [141.146.40.156] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090202.4DA76541.00CE,ss=1,fgs=0 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org [PATCH V8 7/8] ext4: add cleancache support This seventh patch of eight in this cleancache series "opts-in" cleancache for ext4. Filesystems must explicitly enable cleancache by calling cleancache_init_fs anytime an instance of the filesystem is mounted. For ext4, all other cleancache hooks are in the VFS layer including the matching cleancache_flush_fs hook which must be called on unmount. Details and a FAQ can be found in Documentation/vm/cleancache.txt [v6-v8: no changes] [v5: jeremy@goop.org: simplify init hook and any future fs init changes] Signed-off-by: Dan Magenheimer Reviewed-by: Jeremy Fitzhardinge Reviewed-by: Konrad Rzeszutek Wilk Acked-by: Andreas Dilger Cc: Ted Ts'o Cc: Andrew Morton Cc: Al Viro Cc: Matthew Wilcox Cc: Nick Piggin Cc: Mel Gorman Cc: Rik Van Riel Cc: Jan Beulich Cc: Chris Mason Cc: Mark Fasheh Cc: Joel Becker Cc: Nitin Gupta --- Diffstat: fs/ext4/super.c | 2 ++ 1 file changed, 2 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html --- linux-2.6.39-rc3/fs/ext4/super.c 2011-04-11 18:21:51.000000000 -0600 +++ linux-2.6.39-rc3-cleancache/fs/ext4/super.c 2011-04-13 17:10:52.708850707 -0600 @@ -38,6 +38,7 @@ #include #include #include +#include #include #include @@ -1932,6 +1933,7 @@ static int ext4_setup_super(struct super EXT4_INODES_PER_GROUP(sb), sbi->s_mount_opt, sbi->s_mount_opt2); + cleancache_init_fs(sb); return res; }