> +config LOOP_CONFIGURE
> + bool "always uses LOOP_CONFIGURE, kernel version >= 5.8"
> +
> +config NO_LOOP_CONFIGURE
> + bool "never uses LOOP_CONFIGURE, kernel version < 5.8"
> +
> +config TRY_LOOP_CONFIGURE
> + bool "try LOOP_CONFIGURE, kernel version is unknown"
The
LOOP_CONFIGURE is added to Linux 5.8
This allows userspace to completely setup a loop device with a single
ioctl, removing the in-between state where the device can be partially
configured - eg the loop device has a backing file associated with it,
but is reading from the wrong offset.
