Re: [PATCH v4 rebase 00/10] Fix cdrom autoclose

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On 11/26/19 12:54 PM, Michal Suchanek wrote:
> Hello,
> 
> there is cdrom autoclose feature that is supposed to close the tray,
> wait for the disc to become ready, and then open the device.
> 
> This used to work in ancient times. Then in old times there was a hack
> in util-linux which worked around the breakage which probably resulted
> from switching to scsi emulation.
> 
> Currently util-linux maintainer refuses to merge another hack on the
> basis that kernel still has the feature so it should be fixed there.
> The code needs not be replicated in every userspace utility like mount
> or dd which has no business knowing which devices are CD-roms and where
> the autoclose setting is in the kernel.
> 
> This is rebase on top of current master.
> 
> Also it seems that most people think that this is fix for WMware because
> there is one patch dealing with WMware.

I think the main complaint with this is that it's kind of a stretch to
add core functionality for a device type that's barely being
manufactured anymore and is mostly used in a virtualized fashion. I
think it you could fix this without 10 patches of churn and without
adding a new ->open() addition to fops, then people would be a lot more
receptive to the idea of improving cdrom auto-close.

-- 
Jens Axboe




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