Slab defragmentation: Support defragmentation for extX filesystem inodes

Signed-off-by: Christoph Lameter <clameter@sgi.com>

---
 fs/ext2/super.c |   10 +++++++++-
 fs/ext3/super.c |   10 +++++++++-
 fs/ext4/super.c |   10 +++++++++-
 3 files changed, 27 insertions(+), 3 deletions(-)

Index: linux-2.6.23-rc1/fs/ext2/super.c
===================================================================
--- linux-2.6.23-rc1.orig/fs/ext2/super.c	2007-07-27 23:58:04.000000000 -0700
+++ linux-2.6.23-rc1/fs/ext2/super.c	2007-07-27 23:58:47.000000000 -0700
@@ -168,8 +168,16 @@ static void init_once(void * foo, struct
 	inode_init_once(&ei->vfs_inode);
 }
 
+static void *ext2_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+	return fs_get_inodes(s, nr, v,
+		offsetof(struct ext2_inode_info, vfs_inode));
+}
+
 static struct kmem_cache_ops init_once_cache_ops = {
-	.ctor = init_once
+	.ctor = init_once,
+	.get = ext2_get_inodes,
+	.kick = kick_inodes
 };
 
 static int init_inodecache(void)
Index: linux-2.6.23-rc1/fs/ext3/super.c
===================================================================
--- linux-2.6.23-rc1.orig/fs/ext3/super.c	2007-07-27 23:58:04.000000000 -0700
+++ linux-2.6.23-rc1/fs/ext3/super.c	2007-07-27 23:58:47.000000000 -0700
@@ -484,8 +484,16 @@ static void init_once(void * foo, struct
 	inode_init_once(&ei->vfs_inode);
 }
 
+static void *ext3_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+	return fs_get_inodes(s, nr, v,
+		offsetof(struct ext3_inode_info, vfs_inode));
+}
+
 static struct kmem_cache_ops init_once_cache_ops = {
-	.ctor = init_once
+	.ctor = init_once,
+	.get = ext3_get_inodes,
+	.kick = kick_inodes
 };
 
 static int init_inodecache(void)
Index: linux-2.6.23-rc1/fs/ext4/super.c
===================================================================
--- linux-2.6.23-rc1.orig/fs/ext4/super.c	2007-07-27 23:58:53.000000000 -0700
+++ linux-2.6.23-rc1/fs/ext4/super.c	2007-07-27 23:59:47.000000000 -0700
@@ -535,8 +535,16 @@ static void init_once(void * foo, struct
 	inode_init_once(&ei->vfs_inode);
 }
 
+static void *ext4_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+	return fs_get_inodes(s, nr, v,
+		offsetof(struct ext4_inode_info, vfs_inode));
+}
+
 struct init_once_cache_ops = {
-	.ctor = init_once
+	.ctor = init_once,
+	.get = ext4_get_inodes,
+	.kick = kick_inodes
 };
 
 static int init_inodecache(void)