ext2 ext3 ext4: support inode slab defragmentation

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

---
 fs/ext2/super.c |   16 ++++++++++++++--
 fs/ext3/super.c |   14 +++++++++++++-
 fs/ext4/super.c |   14 +++++++++++++-
 3 files changed, 40 insertions(+), 4 deletions(-)

Index: slub/fs/ext2/super.c
===================================================================
--- slub.orig/fs/ext2/super.c	2007-06-07 14:09:36.000000000 -0700
+++ slub/fs/ext2/super.c	2007-06-07 14:28:47.000000000 -0700
@@ -168,14 +168,26 @@ static void init_once(void * foo, struct
 	mutex_init(&ei->truncate_mutex);
 	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 ext2_kmem_cache_ops = {
+	.get = ext2_get_inodes,
+	.kick = kick_inodes
+};
+
 static int init_inodecache(void)
 {
 	ext2_inode_cachep = kmem_cache_create("ext2_inode_cache",
 					     sizeof(struct ext2_inode_info),
 					     0, (SLAB_RECLAIM_ACCOUNT|
 						SLAB_MEM_SPREAD),
-					     init_once, NULL);
+					     init_once,
+					     &ext2_kmem_cache_ops);
 	if (ext2_inode_cachep == NULL)
 		return -ENOMEM;
 	return 0;
Index: slub/fs/ext3/super.c
===================================================================
--- slub.orig/fs/ext3/super.c	2007-06-07 14:09:36.000000000 -0700
+++ slub/fs/ext3/super.c	2007-06-07 14:28:47.000000000 -0700
@@ -483,13 +483,25 @@ 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 ext3_kmem_cache_ops = {
+	.get = ext3_get_inodes,
+	.kick = kick_inodes
+};
+
 static int init_inodecache(void)
 {
 	ext3_inode_cachep = kmem_cache_create("ext3_inode_cache",
 					     sizeof(struct ext3_inode_info),
 					     0, (SLAB_RECLAIM_ACCOUNT|
 						SLAB_MEM_SPREAD),
-					     init_once, NULL);
+					     init_once,
+					     &ext3_kmem_cache_ops);
 	if (ext3_inode_cachep == NULL)
 		return -ENOMEM;
 	return 0;
Index: slub/fs/ext4/super.c
===================================================================
--- slub.orig/fs/ext4/super.c	2007-06-07 14:09:36.000000000 -0700
+++ slub/fs/ext4/super.c	2007-06-07 14:29:49.000000000 -0700
@@ -543,13 +543,25 @@ 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));
+}
+
+static struct kmem_cache_ops ext4_kmem_cache_ops = {
+	.get = ext4_get_inodes,
+	.kick = kick_inodes
+};
+
 static int init_inodecache(void)
 {
 	ext4_inode_cachep = kmem_cache_create("ext4_inode_cache",
 					     sizeof(struct ext4_inode_info),
 					     0, (SLAB_RECLAIM_ACCOUNT|
 						SLAB_MEM_SPREAD),
-					     init_once, NULL);
+					     init_once,
+					     &ext4_kmem_cache_ops);
 	if (ext4_inode_cachep == NULL)
 		return -ENOMEM;
 	return 0;