linux-kernel - [PATCH V4 5/8] Cleancache: ext3 hook for cleancache

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Message-ID: <20100830223233.GA1317@ca-server1.us.oracle.com>
Date:	Mon, 30 Aug 2010 15:32:33 -0700
From:	Dan Magenheimer <dan.magenheimer@...cle.com>
To:	chris.mason@...cle.com, viro@...iv.linux.org.uk,
	akpm@...ux-foundation.org, adilger@....com, tytso@....edu,
	mfasheh@...e.com, joel.becker@...cle.com, matthew@....cx,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	ocfs2-devel@....oracle.com, linux-mm@...ck.org, ngupta@...are.org,
	jeremy@...p.org, JBeulich@...ell.com, kurt.hackel@...cle.com,
	npiggin@...nel.dk, dave.mccracken@...cle.com, riel@...hat.com,
	avi@...hat.com, konrad.wilk@...cle.com, dan.magenheimer@...cle.com,
	mel@....ul.ie, yinghan@...gle.com, gthelen@...gle.com
Subject: [PATCH V4 5/8] Cleancache: ext3 hook for cleancache

[PATCH V4 5/8] Cleancache: ext3 hook for cleancache

Filesystems must explicitly enable cleancache by calling
cleancache_init_fs anytime a instance of the filesystem
is mounted and must save the returned poolid.  For ext3,
all other cleancache hooks are in the VFS layer including
the matching cleancache_flush_fs hook which must be
called on unmount.

Signed-off-by: Dan Magenheimer <dan.magenheimer@...cle.com>
Acked-by: Andreas Dilger <adilger@....com>

Diffstat:
 super.c                                  |    2 ++
 1 file changed, 2 insertions(+)

--- linux-2.6.36-rc3/fs/ext3/super.c	2010-08-29 09:36:04.000000000 -0600
+++ linux-2.6.36-rc3-cleancache/fs/ext3/super.c	2010-08-30 09:20:42.000000000 -0600
@@ -37,6 +37,7 @@
 #include <linux/quotaops.h>
 #include <linux/seq_file.h>
 #include <linux/log2.h>
+#include <linux/cleancache.h>
 
 #include <asm/uaccess.h>
 
@@ -1349,6 +1350,7 @@ static int ext3_setup_super(struct super
 	} else {
 		ext3_msg(sb, KERN_INFO, "using internal journal");
 	}
+	sb->cleancache_poolid = cleancache_init_fs(PAGE_SIZE);
 	return res;
 }
 
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