freebsd-nq/config/kernel-blk-requeue-request.m4
Brian Behlendorf c9c0d073da Add build system
Add autoconf style build infrastructure to the ZFS tree.  This
includes autogen.sh, configure.ac, m4 macros, some scripts/*,
and makefiles for all the core ZFS components.
2010-08-31 13:41:27 -07:00

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dnl #
dnl # 2.6.31 API change
dnl # Request queue peek/retrieval interface cleanup, the
dnl # elv_requeue_request() function has been replaced with the
dnl # blk_requeue_request() function.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST], [
AC_MSG_CHECKING([whether blk_requeue_request() is available])
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
struct request_queue *q = NULL;
struct request *req = NULL;
blk_requeue_request(q, req);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLK_REQUEUE_REQUEST, 1,
[blk_requeue_request() is available])
],[
AC_MSG_RESULT(no)
])
])