Subject: [patch 18/21] Filesystem: Socket inode defragmentation

From: Christoph Lameter <[email-masked]>
Date: Fri, 09 May 2008 20:08:49 -0700

Support inode defragmentation for sockets

Cc: [email-masked]
Reviewed-by: Rik van Riel <[email-masked]>
Signed-off-by: Christoph Lameter <[email-masked]>
---
 net/socket.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/net/socket.c b/net/socket.c
index 9d3fbfb..205f450 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -269,6 +269,12 @@ static void init_once(struct kmem_cache *cachep, void *foo)
 	inode_init_once(&ei->vfs_inode);
 }
 
+static void *sock_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+	return fs_get_inodes(s, nr, v,
+		offsetof(struct socket_alloc, vfs_inode));
+}
+
 static int init_inodecache(void)
 {
 	sock_inode_cachep = kmem_cache_create("sock_inode_cache",
@@ -280,6 +286,8 @@ static int init_inodecache(void)
 					      init_once);
 	if (sock_inode_cachep == NULL)
 		return -ENOMEM;
+	kmem_cache_setup_defrag(sock_inode_cachep,
+			sock_get_inodes, kick_inodes);
 	return 0;
 }
 
-- 
1.5.4.4

--