/usr/src/zfs-0.6.5.6/config/kernel-lookup-bdev.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 | dnl #
dnl # 2.6.27 API change
dnl # lookup_bdev() was exported.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_LOOKUP_BDEV],
[AC_MSG_CHECKING([whether lookup_bdev() is available])
ZFS_LINUX_TRY_COMPILE_SYMBOL([
#include <linux/fs.h>
], [
lookup_bdev(NULL);
], [lookup_bdev], [fs/block_dev.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_LOOKUP_BDEV, 1, [lookup_bdev() is available])
], [
AC_MSG_RESULT(no)
])
])
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