The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel-totalhigh_pages.m4

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    1 dnl #
    2 dnl # 5.0 API change
    3 dnl #
    4 AC_DEFUN([ZFS_AC_KERNEL_SRC_TOTALHIGH_PAGES], [
    5         ZFS_LINUX_TEST_SRC([totalhigh_pages], [
    6                 #include <linux/highmem.h>
    7         ],[
    8                 unsigned long pages __attribute__ ((unused));
    9                 pages = totalhigh_pages();
   10         ])
   11 ])
   12 
   13 AC_DEFUN([ZFS_AC_KERNEL_TOTALHIGH_PAGES], [
   14         AC_MSG_CHECKING([whether totalhigh_pages() exists])
   15         ZFS_LINUX_TEST_RESULT([totalhigh_pages], [
   16                 AC_MSG_RESULT(yes)
   17                 AC_DEFINE(HAVE_TOTALHIGH_PAGES, 1, [totalhigh_pages() exists])
   18         ],[
   19                 AC_MSG_RESULT(no)
   20         ])
   21 ])

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