2 dnl # 2.6.31 API change
4 AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_POS], [
5 AC_MSG_CHECKING([whether blk_rq_pos() is available])
6 tmp_flags="$EXTRA_KCFLAGS"
7 EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
8 ZFS_LINUX_TRY_COMPILE([
9 #include <linux/blkdev.h>
11 struct request *req = NULL;
12 (void) blk_rq_pos(req);
15 AC_DEFINE(HAVE_BLK_RQ_POS, 1,
16 [blk_rq_pos() is available])
20 EXTRA_KCFLAGS="$tmp_flags"