[mirror_zfs.git] / config / kernel-bio-failfast.m4

dnl #
dnl # 2.6.28 API change
dnl # Device, transport, and driver FAILFAST flags were added and
dnl # the now legacy BIO_RW_FAILFAST flag was removed.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST], [
	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, 1,
		          [BIO_RW_FAILFAST_* are defined])
	],[
		AC_MSG_RESULT(no)
	])
])
Commit	Line	Data
2959d94a BB	1	dnl #
	2	dnl # 2.6.28 API change
	3	dnl # Device, transport, and driver FAILFAST flags were added and
	4	dnl # the now legacy BIO_RW_FAILFAST flag was removed.
	5	dnl #
	6	AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST], [
	7	AC_MSG_CHECKING([whether BIO_RW_FAILFAST_* are defined])
	8	ZFS_LINUX_TRY_COMPILE([
	9	#include <linux/bio.h>
	10	],[
	11	int flags;
	12	flags = ((1 << BIO_RW_FAILFAST_DEV) \|
	13	(1 << BIO_RW_FAILFAST_TRANSPORT) \|
	14	(1 << BIO_RW_FAILFAST_DRIVER));
	15	],[
	16	AC_MSG_RESULT(yes)
	17	AC_DEFINE(HAVE_BIO_RW_FAILFAST, 1,
	18	[BIO_RW_FAILFAST_* are defined])
	19	],[
	20	AC_MSG_RESULT(no)
	21	])
	22	])