sunrpc: Add routines that allow registering per-net caches

Existing calls do the same, but for the init_net.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 0349635..6950c98 100644 (file)
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -197,7 +197,9 @@ extern void cache_purge(struct cache_detail *detail);
 #define NEVER (0x7FFFFFFF)
 extern void __init cache_initialize(void);
 extern int cache_register(struct cache_detail *cd);
+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 int sunrpc_cache_register_pipefs(struct dentry *parent, const char *,
                                        mode_t, struct cache_detail *);

diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index ff733df..e84e7dd 100644 (file)
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -34,6 +34,7 @@
 #include <linux/sunrpc/cache.h>
 #include <linux/sunrpc/stats.h>
 #include <linux/sunrpc/rpc_pipe_fs.h>
+#include <net/net_namespace.h>
 
 #define         RPCDBG_FACILITY RPCDBG_CACHE
 
@@ -1537,7 +1538,7 @@ static const struct file_operations cache_flush_operations_procfs = {
        .release        = release_flush_procfs,
 };
 
-static void remove_cache_proc_entries(struct cache_detail *cd)
+static void remove_cache_proc_entries(struct cache_detail *cd, struct net *net)
 {
        if (cd->u.procfs.proc_ent == NULL)
                return;
@@ -1552,7 +1553,7 @@ static void remove_cache_proc_entries(struct cache_detail *cd)
 }
 
 #ifdef CONFIG_PROC_FS
-static int create_cache_proc_entries(struct cache_detail *cd)
+static int create_cache_proc_entries(struct cache_detail *cd, struct net *net)
 {
        struct proc_dir_entry *p;
 
@@ -1587,11 +1588,11 @@ static int create_cache_proc_entries(struct cache_detail *cd)
        }
        return 0;
 out_nomem:
-       remove_cache_proc_entries(cd);
+       remove_cache_proc_entries(cd, net);
        return -ENOMEM;
 }
 #else /* CONFIG_PROC_FS */
-static int create_cache_proc_entries(struct cache_detail *cd)
+static int create_cache_proc_entries(struct cache_detail *cd, struct net *net)
 {
        return 0;
 }
@@ -1602,23 +1603,33 @@ void __init cache_initialize(void)
        INIT_DELAYED_WORK_DEFERRABLE(&cache_cleaner, do_cache_clean);
 }
 
-int cache_register(struct cache_detail *cd)
+int cache_register_net(struct cache_detail *cd, struct net *net)
 {
        int ret;
 
        sunrpc_init_cache_detail(cd);
-       ret = create_cache_proc_entries(cd);
+       ret = create_cache_proc_entries(cd, net);
        if (ret)
                sunrpc_destroy_cache_detail(cd);
        return ret;
 }
+
+int cache_register(struct cache_detail *cd)
+{
+       return cache_register_net(cd, &init_net);
+}
 EXPORT_SYMBOL_GPL(cache_register);
 
-void cache_unregister(struct cache_detail *cd)
+void cache_unregister_net(struct cache_detail *cd, struct net *net)
 {
-       remove_cache_proc_entries(cd);
+       remove_cache_proc_entries(cd, net);
        sunrpc_destroy_cache_detail(cd);
 }
+
+void cache_unregister(struct cache_detail *cd)
+{
+       cache_unregister_net(cd, &init_net);
+}
 EXPORT_SYMBOL_GPL(cache_unregister);
 
 static ssize_t cache_read_pipefs(struct file *filp, char __user *buf,