diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 43bb2fd47..faa0c7d02 100755
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -1093,6 +1093,11 @@ retry:
 	rcu_read_unlock();
 
 	if (nf) {
+		/*
+		 * If the nf is on the LRU then it holds an extra reference
+		 * that must be put if it's removed. It had better not be
+		 * the last one however, since we should hold another.
+		 */
 		if (nfsd_file_lru_remove(nf))
 			WARN_ON_ONCE(refcount_dec_and_test(&nf->nf_ref));
 		goto wait_for_construction;