->permission() sanitizing: don't pass flags to generic_permission()

redundant; all callers get it duplicated in mask & MAY_NOT_BLOCK and none of
them removes that bit.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 0485dca..16cf84b 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2328,7 +2328,7 @@
 out_notsup:
 	res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
 	if (res == 0)
-		res = generic_permission(inode, mask, flags);
+		res = generic_permission(inode, mask);
 	goto out;
 }