freebsd-dev/config/kernel-bio-bvec-iter.m4

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dnl #
dnl # 3.14 API change,
dnl # Immutable biovecs. A number of fields of struct bio are moved to
dnl # struct bvec_iter.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BIO_BVEC_ITER], [
AC_MSG_CHECKING([whether bio has bi_iter])
ZFS_LINUX_TRY_COMPILE([
#include <linux/bio.h>
],[
struct bio bio;
bio.bi_iter.bi_sector = 0;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BIO_BVEC_ITER, 1, [bio has bi_iter])
],[
AC_MSG_RESULT(no)
])
])