config/kernel-readpages.m4

   1 dnl #
   2 dnl # Linux 5.18 removes address_space_operations ->readpages in favour of
   3 dnl # ->readahead
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_READPAGES], [
   6         ZFS_LINUX_TEST_SRC([vfs_has_readpages], [
   7                 #include <linux/fs.h>
   8
   9                 static const struct address_space_operations
  10                     aops __attribute__ ((unused)) = {
  11                         .readpages = NULL,
  12                 };
  13         ],[])
  14 ])
  15
  16 AC_DEFUN([ZFS_AC_KERNEL_VFS_READPAGES], [
  17         AC_MSG_CHECKING([whether aops->readpages exists])
  18         ZFS_LINUX_TEST_RESULT([vfs_has_readpages], [
  19                 AC_MSG_RESULT([yes])
  20                 AC_DEFINE(HAVE_VFS_READPAGES, 1,
  21                         [address_space_operations->readpages exists])
  22         ],[
  23                 AC_MSG_RESULT([no])
  24         ])
  25 ])