config/kernel-rq-for-each_segment.m4

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