config/kernel-vfs-read_folio.m4

   1 dnl #
   2 dnl # Linux 5.19 uses read_folio in lieu of readpage
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_READ_FOLIO], [
   5         ZFS_LINUX_TEST_SRC([vfs_has_read_folio], [
   6                 #include <linux/fs.h>
   7
   8                 static int
   9                 test_read_folio(struct file *file, struct folio *folio) {
  10                         (void) file; (void) folio;
  11                         return (0);
  12                 }
  13
  14                 static const struct address_space_operations
  15                     aops __attribute__ ((unused)) = {
  16                         .read_folio     = test_read_folio,
  17                 };
  18         ],[])
  19 ])
  20
  21 AC_DEFUN([ZFS_AC_KERNEL_VFS_READ_FOLIO], [
  22         dnl #
  23         dnl # Linux 5.19 uses read_folio in lieu of readpage
  24         dnl #
  25         AC_MSG_CHECKING([whether read_folio exists])
  26         ZFS_LINUX_TEST_RESULT([vfs_has_read_folio], [
  27                 AC_MSG_RESULT([yes])
  28                 AC_DEFINE(HAVE_VFS_READ_FOLIO, 1, [read_folio exists])
  29         ],[
  30                 AC_MSG_RESULT([no])
  31         ])
  32 ])