config/kernel-filemap.m4

   1 dnl #
   2 dnl # filemap_range_has_page was not available till 4.13
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_SRC_FILEMAP], [
   5         ZFS_LINUX_TEST_SRC([filemap_range_has_page], [
   6                 #include <linux/fs.h>
   7         ],[
   8                 struct address_space *mapping = NULL;
   9                 loff_t lstart = 0;
  10                 loff_t lend = 0;
  11                 bool ret __attribute__ ((unused));
  12
  13                 ret = filemap_range_has_page(mapping, lstart, lend);
  14         ])
  15 ])
  16
  17 AC_DEFUN([ZFS_AC_KERNEL_FILEMAP], [
  18         AC_MSG_CHECKING([whether filemap_range_has_page() is available])
  19         ZFS_LINUX_TEST_RESULT([filemap_range_has_page], [
  20                 AC_MSG_RESULT(yes)
  21                 AC_DEFINE(HAVE_FILEMAP_RANGE_HAS_PAGE, 1,
  22                 [filemap_range_has_page() is available])
  23         ],[
  24                 AC_MSG_RESULT(no)
  25         ])
  26 ])