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dnl #
dnl # Preferred interface for setting FAILFAST on a bio:
dnl # 2.6.12-2.6.27: BIO_RW_FAILFAST
dnl # 2.6.28-2.6.35: BIO_RW_FAILFAST_{DEV|TRANSPORT|DRIVER}
dnl # 2.6.36-2.6.xx: REQ_FAILFAST_{DEV|TRANSPORT|DRIVER}
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST], [
AC_MSG_CHECKING([whether BIO_RW_FAILFAST is defined])
ZFS_LINUX_TRY_COMPILE([
#include <linux/bio.h>
],[
int flags;
flags = (1 << BIO_RW_FAILFAST);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BIO_RW_FAILFAST, 1,
[BIO_RW_FAILFAST is defined])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST_DTD], [
AC_MSG_CHECKING([whether BIO_RW_FAILFAST_* are defined])
ZFS_LINUX_TRY_COMPILE([
#include <linux/bio.h>
],[
int flags;
flags = ((1 << BIO_RW_FAILFAST_DEV) |
(1 << BIO_RW_FAILFAST_TRANSPORT) |
(1 << BIO_RW_FAILFAST_DRIVER));
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BIO_RW_FAILFAST_DTD, 1,
[BIO_RW_FAILFAST_* are defined])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_REQ_FAILFAST_MASK], [
AC_MSG_CHECKING([whether REQ_FAILFAST_MASK is defined])
ZFS_LINUX_TRY_COMPILE([
#include <linux/bio.h>
],[
int flags;
flags = REQ_FAILFAST_MASK;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BIO_REQ_FAILFAST_MASK, 1,
[REQ_FAILFAST_MASK is defined])
],[
AC_MSG_RESULT(no)
])
])
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