Re: [ibm-acpi-devel] CONFIG_IBM_BAY

[Shem M. <mul...@gm...>]

On 3/19/07, Henrique de Moraes Holschuh <hm...@hm...> wrote:
> True.  The best available procedure to do this for ACPI bay/dock currently
> is, AFAIK:
>
> 1. Send event when bay/dock "please release" button/lever is pressed. Do
> *nothing* else.  I know bay does this right, maybe dock doesn't.
>
> 2. Wait for something to echo 1 >eject or to call the appropriate routine
> directly, or (if this exists) for an notification from firmware that the
> user IS disconnecting the device for real.
>
> 3. delete the device.  This means force-umount, force-close, etc.
>
> 4. Tell the hardware to eject.
>
>
> Note that currently (2) and (3) are swapped, as (3) is being done by
> userspace request, instead of by the kernel.  This is something I *don't*
> like.

Userspace wants to (non-force-)-unmount by itself after (1), so it can
stop  the eject process if the filesystems cannot be cleanly
unmounted. So the force-unmount at (3) ends up being a redundant
safety measure at best.

  Shem