nfsd: make id-to-name cache allocated per network namespace context

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 9794c6c..948a718 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -31,6 +31,9 @@
 
 	struct cache_detail *svc_expkey_cache;
 	struct cache_detail *svc_export_cache;
+
+	struct cache_detail *idtoname_cache;
+
 };
 
 extern int nfsd_net_id;