[patch 16/19] Filesystem: /proc filesystem support for slab defrag

[Christoph Lameter <cl@linux-foundation.org>]

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Support procfs inode defragmentation

Cc: Alexey Dobriyan <adobriyan@sw.ru>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>

---
 fs/proc/inode.c |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: linux-next/fs/proc/inode.c
===================================================================
--- linux-next.orig/fs/proc/inode.c	2008-08-11 07:42:11.542357951 -0700
+++ linux-next/fs/proc/inode.c	2008-08-11 07:47:05.102359374 -0700
@@ -106,6 +106,12 @@ static void init_once(void *foo)
 	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",
@@ -113,6 +119,8 @@ int __init proc_init_inodecache(void)
 					     0, (SLAB_RECLAIM_ACCOUNT|
 						SLAB_MEM_SPREAD|SLAB_PANIC),
 					     init_once);
+	kmem_cache_setup_defrag(proc_inode_cachep,
+				proc_get_inodes, kick_inodes);
 	return 0;
 }
 

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