/usr/src/zfs-0.6.5.6/config/kernel-blkdev-get.m4 is in zfs-dkms 0.6.5.6-0ubuntu8.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | dnl #
dnl # 2.6.37 API change
dnl # Added 3rd argument for the active holder, previously this was
dnl # hardcoded to NULL.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_3ARG_BLKDEV_GET], [
AC_MSG_CHECKING([whether blkdev_get() wants 3 args])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
struct block_device *bdev = NULL;
(void) blkdev_get(bdev, 0, NULL);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_3ARG_BLKDEV_GET, 1, [blkdev_get() wants 3 args])
],[
AC_MSG_RESULT(no)
])
])
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