+# LIBCFS_VMALLOC_2ARGS
+#
+# kernel v5.8-rc1~201^2~19
+# mm: remove the pgprot argument to __vmalloc
+AC_DEFUN([LIBCFS_VMALLOC_2ARGS], [
+LB_CHECK_COMPILE([if __vmalloc has 2 args],
+vmalloc_2args, [
+ #include <linux/vmalloc.h>
+],[
+ __vmalloc(0, 0);
+],[
+ AC_DEFINE(HAVE_VMALLOC_2ARGS, 1,
+ [__vmalloc only takes 2 args.])
+])
+]) # LIBCFS_VMALLOC_2ARGS
+
+#