config/kernel-filemap-splice-read.m4

   1 AC_DEFUN([ZFS_AC_KERNEL_SRC_COPY_SPLICE_READ], [
   2         dnl #
   3         dnl # Kernel 6.5 - generic_file_splice_read was removed in favor
   4         dnl # of copy_splice_read for the .splice_read member of the
   5         dnl # file_operations struct.
   6         dnl #
   7         ZFS_LINUX_TEST_SRC([has_copy_splice_read], [
   8                 #include <linux/fs.h>
   9
  10                 struct file_operations fops __attribute__((unused)) = {
  11                         .splice_read = copy_splice_read,
  12                 };
  13         ],[])
  14 ])
  15
  16 AC_DEFUN([ZFS_AC_KERNEL_COPY_SPLICE_READ], [
  17         AC_MSG_CHECKING([whether copy_splice_read() exists])
  18         ZFS_LINUX_TEST_RESULT([has_copy_splice_read], [
  19                 AC_MSG_RESULT(yes)
  20                 AC_DEFINE(HAVE_COPY_SPLICE_READ, 1,
  21                     [copy_splice_read exists])
  22         ],[
  23                 AC_MSG_RESULT(no)
  24         ])
  25 ])