NFS4: Open files for fscaching

nfs4_file_open() should open files for fscaching.

Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index c817787..24d1d1c 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -307,6 +307,7 @@
 		nfs_fscache_inode_unlock(inode);
 	}
 }
+EXPORT_SYMBOL_GPL(nfs_fscache_set_inode_cookie);
 
 /*
  * Replace a per-inode cookie due to revalidation detecting a file having