config/kernel-blk-rq-pos.m4

   1 dnl #
   2 dnl # 2.6.31 API change
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_POS], [
   5         AC_MSG_CHECKING([whether blk_rq_pos() is available])
   6         ZFS_LINUX_TRY_COMPILE([
   7                 #include <linux/blkdev.h>
   8         ],[
   9                 struct request *req = NULL;
  10                 (void) blk_rq_pos(req);
  11         ],[
  12                 AC_MSG_RESULT(yes)
  13                 AC_DEFINE(HAVE_BLK_RQ_POS, 1,
  14                           [blk_rq_pos() is available])
  15         ],[
  16                 AC_MSG_RESULT(no)
  17         ])
  18 ])