config/kernel-fadvise.m4

   1 dnl #
   2 dnl # Linux 4.19 API
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_SRC_FADVISE], [
   5         ZFS_LINUX_TEST_SRC([file_fadvise], [
   6                 #include <linux/fs.h>
   7
   8                 static const struct file_operations
   9                     fops __attribute__ ((unused)) = {
  10                         .fadvise = NULL,
  11                 };
  12         ],[])
  13 ])
  14
  15 AC_DEFUN([ZFS_AC_KERNEL_FADVISE], [
  16         AC_MSG_CHECKING([whether fops->fadvise() exists])
  17         ZFS_LINUX_TEST_RESULT([file_fadvise], [
  18                 AC_MSG_RESULT(yes)
  19                 AC_DEFINE(HAVE_FILE_FADVISE, 1, [fops->fadvise() exists])
  20         ],[
  21                 AC_MSG_RESULT(no)
  22         ])
  23 ])