+
+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)
+ ])
+])