make sure that nsproxy_cache is initialized early enough

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
index 50d20ab..cc37a55 100644
--- a/include/linux/nsproxy.h
+++ b/include/linux/nsproxy.h
@@ -68,6 +68,7 @@
 void free_nsproxy(struct nsproxy *ns);
 int unshare_nsproxy_namespaces(unsigned long, struct nsproxy **,
 	struct fs_struct *);
+int __init nsproxy_cache_init(void);
 
 static inline void put_nsproxy(struct nsproxy *ns)
 {
diff --git a/kernel/fork.c b/kernel/fork.c
index 0276c30..31fa13e 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1574,6 +1574,7 @@
 			SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK, NULL);
 	vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC);
 	mmap_init();
+	nsproxy_cache_init();
 }
 
 /*
diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c
index d6a00f3..9aeab4b 100644
--- a/kernel/nsproxy.c
+++ b/kernel/nsproxy.c
@@ -271,10 +271,8 @@
 	return err;
 }
 
-static int __init nsproxy_cache_init(void)
+int __init nsproxy_cache_init(void)
 {
 	nsproxy_cachep = KMEM_CACHE(nsproxy, SLAB_PANIC);
 	return 0;
 }
-
-module_init(nsproxy_cache_init);