/usr/src/zfs-0.6.5.6/config/kernel-get-disk-ro.m4 is in zfs-dkms 0.6.5.6-0ubuntu8.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | dnl #
dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_GET_DISK_RO], [
AC_MSG_CHECKING([whether get_disk_ro() is available])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
struct gendisk *disk = NULL;
(void) get_disk_ro(disk);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_GET_DISK_RO, 1,
[blk_disk_ro() is available])
],[
AC_MSG_RESULT(no)
])
EXTRA_KCFLAGS="$tmp_flags"
])
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