From: Dan Magenheimer Subject: [PATCH V8 7/8] ext4: add cleancache support Date: Thu, 14 Apr 2011 14:19:02 -0700 Message-ID: <20110414211902.GA27813__47504.6087791727$1302816131$gmane$org@ca-server1.us.oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii 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@ Return-path: 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 Content-Disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: [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(+) --- 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; }