NFSd: use network-namespace-aware cache registering routines

v2: cache_register_net() and cache_unregister_net() GPL exports added

This is a cleanup patch. Hope, some day generic cache_register() and
cache_unregister() will be removed.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/export.c

@@ -1226,12 +1226,12 @@ nfsd_export_init(void)
 	int rv;
 	dprintk("nfsd: initializing export module.\n");
 
-	rv = cache_register(&svc_export_cache);
+	rv = cache_register_net(&svc_export_cache, &init_net);
 	if (rv)
 		return rv;
-	rv = cache_register(&svc_expkey_cache);
+	rv = cache_register_net(&svc_expkey_cache, &init_net);
 	if (rv)
-		cache_unregister(&svc_export_cache);
+		cache_unregister_net(&svc_export_cache, &init_net);
 	return rv;
 
 }
@@ -1255,8 +1255,8 @@ nfsd_export_shutdown(void)
 
 	dprintk("nfsd: shutting down export module.\n");
 
-	cache_unregister(&svc_expkey_cache);
-	cache_unregister(&svc_export_cache);
+	cache_unregister_net(&svc_expkey_cache, &init_net);
+	cache_unregister_net(&svc_export_cache, &init_net);
 	svcauth_unix_purge();
 
 	dprintk("nfsd: export shutdown complete.\n");

fs/nfsd/nfs4idmap.c

@@ -36,6 +36,7 @@
 #include <linux/seq_file.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+#include <net/net_namespace.h>
 #include "idmap.h"
 #include "nfsd.h"
 
@@ -466,20 +467,20 @@ nfsd_idmap_init(void)
 {
 	int rv;
 
-	rv = cache_register(&idtoname_cache);
+	rv = cache_register_net(&idtoname_cache, &init_net);
 	if (rv)
 		return rv;
-	rv = cache_register(&nametoid_cache);
+	rv = cache_register_net(&nametoid_cache, &init_net);
 	if (rv)
-		cache_unregister(&idtoname_cache);
+		cache_unregister_net(&idtoname_cache, &init_net);
 	return rv;
 }
 
 void
 nfsd_idmap_shutdown(void)
 {
-	cache_unregister(&idtoname_cache);
-	cache_unregister(&nametoid_cache);
+	cache_unregister_net(&idtoname_cache, &init_net);
+	cache_unregister_net(&nametoid_cache, &init_net);
 }
 
 static int

net/sunrpc/cache.c

@@ -1641,6 +1641,7 @@ int cache_register_net(struct cache_detail *cd, struct net *net)
 		sunrpc_destroy_cache_detail(cd);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(cache_register_net);
 
 int cache_register(struct cache_detail *cd)
 {
@@ -1653,6 +1654,7 @@ void cache_unregister_net(struct cache_detail *cd, struct net *net)
 	remove_cache_proc_entries(cd, net);
 	sunrpc_destroy_cache_detail(cd);
 }
+EXPORT_SYMBOL_GPL(cache_unregister_net);
 
 void cache_unregister(struct cache_detail *cd)
 {