aboutsummaryrefslogtreecommitdiffstats
path: root/config/kernel-rq-for-each_segment.m4
blob: 15f030f350081b5845af461d14feef694b6fa0de (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
dnl #
dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT], [
	AC_MSG_CHECKING([whether rq_for_each_segment() is available])
	ZFS_LINUX_TRY_COMPILE([
		#include <linux/blkdev.h>
	],[
		struct bio_vec *bv;
		struct req_iterator iter;
		struct request *req = NULL;
		rq_for_each_segment(bv, req, iter) { }
	],[
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT, 1,
		          [rq_for_each_segment() is available])
	],[
		AC_MSG_RESULT(no)
	])
])