/usr/src/zfs-0.6.5.6/config/kernel-bdev-block-device-operations.m4 is in zfs-dkms 0.6.5.6-0ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | dnl #
dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS], [
AC_MSG_CHECKING([block device operation prototypes])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
int blk_open(struct block_device *bdev, fmode_t mode)
{ return 0; }
int blk_ioctl(struct block_device *bdev, fmode_t mode,
unsigned x, unsigned long y) { return 0; }
int blk_compat_ioctl(struct block_device * bdev, fmode_t mode,
unsigned x, unsigned long y) { return 0; }
static const struct block_device_operations
bops __attribute__ ((unused)) = {
.open = blk_open,
.release = NULL,
.ioctl = blk_ioctl,
.compat_ioctl = blk_compat_ioctl,
};
],[
],[
AC_MSG_RESULT(struct block_device)
AC_DEFINE(HAVE_BDEV_BLOCK_DEVICE_OPERATIONS, 1,
[struct block_device_operations use bdevs])
],[
AC_MSG_RESULT(struct inode)
])
EXTRA_KCFLAGS="$tmp_flags"
])
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