config/kernel-totalhigh_pages.m4

   1 dnl #
   2 dnl # 5.0 API change
   3 dnl #
   4 dnl # ca79b0c211af mm: convert totalram_pages and totalhigh_pages variables to atomic
   5 dnl #
   6 AC_DEFUN([ZFS_AC_KERNEL_TOTALHIGH_PAGES], [
   7         AC_MSG_CHECKING([whether totalhigh_pages() exists])
   8         ZFS_LINUX_TRY_COMPILE([
   9                 #include <linux/highmem.h>
  10         ],[
  11                 unsigned long pages __attribute__ ((unused));
  12                 pages = totalhigh_pages();
  13         ],[
  14                 AC_MSG_RESULT(yes)
  15                 AC_DEFINE(HAVE_TOTALHIGH_PAGES, 1, [totalhigh_pages() exists])
  16         ],[
  17                 AC_MSG_RESULT(no)
  18         ])
  19 ])