config/kernel-bio-failfast.m4

   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 ])