make ufs_inode_cache statically allocated

A modular example I used for testing...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ufs/super.c

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index c4831a8..72053bc 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -90,6 +90,7 @@
 #include <linux/log2.h>
 #include <linux/seq_file.h>
 #include <linux/iversion.h>
+#include <linux/slab-static.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
@@ -1353,7 +1354,8 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	return 0;
 }
 
-static struct kmem_cache * ufs_inode_cachep;
+static struct kmem_cache_opaque ufs_inode_cache;
+#define ufs_inode_cachep to_kmem_cache(&ufs_inode_cache)
 
 static struct inode *ufs_alloc_inode(struct super_block *sb)
 {
@@ -1383,16 +1385,13 @@ static void init_once(void *foo)
 
 static int __init init_inodecache(void)
 {
-	ufs_inode_cachep = kmem_cache_create_usercopy("ufs_inode_cache",
+	return kmem_cache_setup_usercopy(ufs_inode_cachep, "ufs_inode_cache",
 				sizeof(struct ufs_inode_info), 0,
 				(SLAB_RECLAIM_ACCOUNT | SLAB_ACCOUNT),
 				offsetof(struct ufs_inode_info, i_u1.i_symlink),
 				sizeof_field(struct ufs_inode_info,
 					i_u1.i_symlink),
 				init_once);
-	if (ufs_inode_cachep == NULL)
-		return -ENOMEM;
-	return 0;
 }
 
 static void destroy_inodecache(void)