[PATCH] NFSD: Fix licensing header in filecache.c

[Chuck Lever <chuck.lever@xxxxxxxxxx>]

Add a missing SPDX header.

Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
 fs/nfsd/filecache.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 965c7b13fddc..dcf9c6ca412a 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -1,5 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
- * Open file cache.
+ * The NFSD open file cache.
  *
  * (c) 2015 - Jeff Layton <jeff.layton@xxxxxxxxxxxxxxx>
  */