diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 786e06cf1..1d4c0387c 100755
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -906,7 +906,8 @@ out_err:
  * @net: net-namespace to shut down the cache (may be NULL)
  *
  * Walk the nfsd_file cache and close out any that match @net. If @net is NULL,
- * then close out everything. Called when an nfsd instance is being shut down.
+ * then close out everything. Called when an nfsd instance is being shut down,
+ * and when the exports table is flushed.
  */
 static void
 __nfsd_file_cache_purge(struct net *net)