2 files changed, 30 insertions, 0 deletions

diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 590a8ab0cec3..259381ca811b 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -117,6 +117,7 @@ struct cache_detail {
                 struct cache_detail_procfs procfs;
                 struct cache_detail_pipefs pipefs;
         } u;
+        struct net              *net;
 };
 
 
@@ -202,6 +203,9 @@ extern int cache_register_net(struct cache_detail *cd, struct net *net);
 extern void cache_unregister(struct cache_detail *cd);
 extern void cache_unregister_net(struct cache_detail *cd, struct net *net);
 
+extern struct cache_detail *cache_create_net(struct cache_detail *tmpl, struct net *net);
+extern void cache_destroy_net(struct cache_detail *cd, struct net *net);
+
 extern void sunrpc_init_cache_detail(struct cache_detail *cd);
 extern void sunrpc_destroy_cache_detail(struct cache_detail *cd);
 extern int sunrpc_cache_register_pipefs(struct dentry *parent, const char *,
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index fefe06729f9d..a450b8ac648b 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -1664,6 +1664,32 @@ void cache_unregister(struct cache_detail *cd)
 }
 EXPORT_SYMBOL_GPL(cache_unregister);
 
+struct cache_detail *cache_create_net(struct cache_detail *tmpl, struct net *net)
+{
+        struct cache_detail *cd;
+
+        cd = kmemdup(tmpl, sizeof(struct cache_detail), GFP_KERNEL);
+        if (cd == NULL)
+                return ERR_PTR(-ENOMEM);
+
+        cd->hash_table = kzalloc(cd->hash_size * sizeof(struct cache_head *),
+                                 GFP_KERNEL);
+        if (cd->hash_table == NULL) {
+                kfree(cd);
+                return ERR_PTR(-ENOMEM);
+        }
+        cd->net = net;
+        return cd;
+}
+EXPORT_SYMBOL_GPL(cache_create_net);
+
+void cache_destroy_net(struct cache_detail *cd, struct net *net)
+{
+        kfree(cd->hash_table);
+        kfree(cd);
+}
+EXPORT_SYMBOL_GPL(cache_destroy_net);
+
 static ssize_t cache_read_pipefs(struct file *filp, char __user *buf,
                                  size_t count, loff_t *ppos)
 {