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Date:	Thu, 14 Apr 2011 14:18:02 -0700
From:	Dan Magenheimer <>
Subject: [PATCH V8 5/8] ext3: add cleancache support

[PATCH V8 5/8] ext3: add cleancache support

This fifth patch of eight in this cleancache series "opts-in"
cleancache for ext3.  Filesystems must explicitly enable
cleancache by calling cleancache_init_fs anytime an instance
of the filesystem is mounted. For ext3, 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: 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 <>


 fs/ext3/super.c                          |    2 ++
 1 file changed, 2 insertions(+)

--- linux-2.6.39-rc3/fs/ext3/super.c	2011-04-11 18:21:51.000000000 -0600
+++ linux-2.6.39-rc3-cleancache/fs/ext3/super.c	2011-04-13 17:10:40.918915872 -0600
@@ -36,6 +36,7 @@
 #include <linux/quotaops.h>
 #include <linux/seq_file.h>
 #include <linux/log2.h>
+#include <linux/cleancache.h>
 #include <asm/uaccess.h>
@@ -1367,6 +1368,7 @@ static int ext3_setup_super(struct super
 	} else {
 		ext3_msg(sb, KERN_INFO, "using internal journal");
+	cleancache_init_fs(sb);
 	return res;
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