nfsd: allocate id-to-name and name-to-id caches in per-net operations.

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

fs/nfsd/nfsctl.c

@@ -1145,14 +1145,20 @@ static __net_init int nfsd_init_net(struct net *net)
 	retval = nfsd_export_init(net);
 	if (retval)
 		goto out_export_error;
+	retval = nfsd_idmap_init(net);
+	if (retval)
+		goto out_idmap_error;
 	return 0;
 
+out_idmap_error:
+	nfsd_export_shutdown(net);
 out_export_error:
 	return retval;
 }
 
 static __net_exit void nfsd_exit_net(struct net *net)
 {
+	nfsd_idmap_shutdown(net);
 	nfsd_export_shutdown(net);
 }
 
@@ -1186,21 +1192,16 @@ static int __init init_nfsd(void)
 	if (retval)
 		goto out_free_stat;
 	nfsd_lockd_init();	/* lockd->nfsd callbacks */
-	retval = nfsd_idmap_init(&init_net);
-	if (retval)
-		goto out_free_lockd;
 	retval = create_proc_exports_entry();
 	if (retval)
-		goto out_free_idmap;
+		goto out_free_lockd;
 	retval = register_filesystem(&nfsd_fs_type);
 	if (retval)
 		goto out_free_all;
 	return 0;
 out_free_all:
 	remove_proc_entry("fs/nfs/exports", NULL);
 	remove_proc_entry("fs/nfs", NULL);
-out_free_idmap:
-	nfsd_idmap_shutdown(&init_net);
 out_free_lockd:
 	nfsd_lockd_shutdown();
 	nfsd_reply_cache_shutdown();
@@ -1223,7 +1224,6 @@ static void __exit exit_nfsd(void)
 	remove_proc_entry("fs/nfs", NULL);
 	nfsd_stat_shutdown();
 	nfsd_lockd_shutdown();
-	nfsd_idmap_shutdown(&init_net);
 	nfsd4_free_slabs();
 	nfsd_fault_inject_cleanup();
 	unregister_filesystem(&nfsd_fs_type);