2 dnl # Preferred interface for setting FAILFAST on a bio:
3 dnl # 2.6.12-2.6.27: BIO_RW_FAILFAST
4 dnl # 2.6.28-2.6.35: BIO_RW_FAILFAST_{DEV|TRANSPORT|DRIVER}
5 dnl # 2.6.36-2.6.xx: REQ_FAILFAST_{DEV|TRANSPORT|DRIVER}
7 AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST], [
8 AC_MSG_CHECKING([whether BIO_RW_FAILFAST is defined])
9 ZFS_LINUX_TRY_COMPILE([
10 #include <linux/bio.h>
13 flags = (1 << BIO_RW_FAILFAST);
16 AC_DEFINE(HAVE_BIO_RW_FAILFAST, 1,
17 [BIO_RW_FAILFAST is defined])
23 AC_DEFUN([ZFS_AC_KERNEL_BIO_FAILFAST_DTD], [
24 AC_MSG_CHECKING([whether BIO_RW_FAILFAST_* are defined])
25 ZFS_LINUX_TRY_COMPILE([
26 #include <linux/bio.h>
29 flags = ((1 << BIO_RW_FAILFAST_DEV) |
30 (1 << BIO_RW_FAILFAST_TRANSPORT) |
31 (1 << BIO_RW_FAILFAST_DRIVER));
34 AC_DEFINE(HAVE_BIO_RW_FAILFAST_DTD, 1,
35 [BIO_RW_FAILFAST_* are defined])
41 AC_DEFUN([ZFS_AC_KERNEL_REQ_FAILFAST_MASK], [
42 AC_MSG_CHECKING([whether REQ_FAILFAST_MASK is defined])
43 ZFS_LINUX_TRY_COMPILE([
44 #include <linux/bio.h>
47 flags = REQ_FAILFAST_MASK;
50 AC_DEFINE(HAVE_BIO_REQ_FAILFAST_MASK, 1,
51 [REQ_FAILFAST_MASK is defined])