4 AC_DEFUN([ZFS_AC_KERNEL_RQ_IS_SYNC], [
5 AC_MSG_CHECKING([whether rq_is_sync() is available])
6 ZFS_LINUX_TRY_COMPILE([
7 #include <linux/blkdev.h>
9 struct request *req = NULL;
10 (void) rq_is_sync(req);
13 AC_DEFINE(HAVE_RQ_IS_SYNC, 1,
14 [rq_is_sync() is available])