From: Dan Magenheimer on
[PATCH V3 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(a)>
Acked-by: Andreas Dilger <adilger(a)>

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

--- linux-2.6.35-rc2/fs/ext3/super.c 2010-06-05 21:43:24.000000000 -0600
+++ linux-2.6.35-rc2-cleancache/fs/ext3/super.c 2010-06-11 09:01:37.000000000 -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>

@@ -1362,6 +1363,7 @@ 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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