config/kernel-bio-failfast.m4

   1 dnl #
   2 dnl # Preferred interface for setting FAILFAST on a bio:
   3 dnl #   2.6.28-2.6.35: BIO_RW_FAILFAST_{DEV|TRANSPORT|DRIVER}
   4 dnl #       >= 2.6.36: REQ_FAILFAST_{DEV|TRANSPORT|DRIVER}
   5 dnl #
   6 AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_FAILFAST_DTD], [
   7         ZFS_LINUX_TEST_SRC([bio_failfast_dtd], [
   8                 #include <linux/bio.h>
   9         ],[
  10                 int flags __attribute__ ((unused));
  11                 flags = ((1 << BIO_RW_FAILFAST_DEV) |
  12                          (1 << BIO_RW_FAILFAST_TRANSPORT) |
  13                          (1 << BIO_RW_FAILFAST_DRIVER));
  14         ])
  15 ])
  16
  17 AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST_DTD], [
  18         AC_MSG_CHECKING([whether BIO_RW_FAILFAST_* are defined])
  19         ZFS_LINUX_TEST_RESULT([bio_failfast_dtd], [
  20                 AC_MSG_RESULT(yes)
  21                 AC_DEFINE(HAVE_BIO_RW_FAILFAST_DTD, 1,
  22                     [BIO_RW_FAILFAST_* are defined])
  23         ],[
  24                 AC_MSG_RESULT(no)
  25         ])
  26 ])
  27
  28 AC_DEFUN([ZFS_AC_KERNEL_SRC_REQ_FAILFAST_MASK], [
  29         ZFS_LINUX_TEST_SRC([bio_failfast_mask], [
  30                 #include <linux/bio.h>
  31         ],[
  32                 int flags __attribute__ ((unused));
  33                 flags = REQ_FAILFAST_MASK;
  34         ])
  35 ])
  36
  37 AC_DEFUN([ZFS_AC_KERNEL_REQ_FAILFAST_MASK], [
  38         AC_MSG_CHECKING([whether REQ_FAILFAST_MASK is defined])
  39         ZFS_LINUX_TEST_RESULT([bio_failfast_mask], [
  40                 AC_MSG_RESULT(yes)
  41                 AC_DEFINE(HAVE_REQ_FAILFAST_MASK, 1,
  42                     [REQ_FAILFAST_MASK is defined])
  43         ],[
  44                 AC_MSG_RESULT(no)
  45         ])
  46 ])
  47
  48 AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_FAILFAST], [
  49         ZFS_AC_KERNEL_SRC_BIO_FAILFAST_DTD
  50         ZFS_AC_KERNEL_SRC_REQ_FAILFAST_MASK
  51 ])
  52
  53 AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST], [
  54         ZFS_AC_KERNEL_BIO_FAILFAST_DTD
  55         ZFS_AC_KERNEL_REQ_FAILFAST_MASK
  56 ])