[FS] Proc filesystem support for slab defrag

Slab defragmentation: Support procfs inode defragmentation

Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
 fs/proc/inode.c |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: linux-2.6/fs/proc/inode.c
===================================================================
--- linux-2.6.orig/fs/proc/inode.c	2007-08-08 19:29:17.000000000 -0700
+++ linux-2.6/fs/proc/inode.c	2007-08-08 20:51:59.000000000 -0700
@@ -113,6 +113,12 @@ static void init_once(void * foo, struct
 	inode_init_once(&ei->vfs_inode);
 }
 
+static void *proc_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+	return fs_get_inodes(s, nr, v,
+		offsetof(struct proc_inode, vfs_inode));
+};
+
 int __init proc_init_inodecache(void)
 {
 	proc_inode_cachep = kmem_cache_create("proc_inode_cache",
@@ -122,6 +128,8 @@ int __init proc_init_inodecache(void)
 					     init_once);
 	if (proc_inode_cachep == NULL)
 		return -ENOMEM;
+	kmem_cache_setup_defrag(proc_inode_cachep,
+				proc_get_inodes, kick_inodes);
 	return 0;
 }