[patch 13/17] FS: Proc filesystem support for slab defrag

[Christoph Lameter <clameter@sgi.com>]

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Support procfs inode defragmentation

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

Index: linux-2.6.24-rc6-mm1/fs/proc/inode.c
===================================================================
--- linux-2.6.24-rc6-mm1.orig/fs/proc/inode.c	2007-12-26 17:47:03.223412165 -0800
+++ linux-2.6.24-rc6-mm1/fs/proc/inode.c	2007-12-27 12:04:43.742341773 -0800
@@ -104,6 +104,12 @@ static void init_once(struct kmem_cache 
 	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",
@@ -111,6 +117,8 @@ 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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