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SubjectRe: setting up CDB filters in udev (was Re: [PATCH v2 0/3] block: add queue-private command filter, editable via sysfs)
Hello, Alan.

On Sat, Nov 03, 2012 at 02:50:52PM +0000, Alan Cox wrote:
> > I proposed a way to implement the ultimately flexible solution (BPF) and
> > you shot it down because it was too complex. Alan is showing you with
> > multiple examples of why the flexibility would be useful (perhaps nobody
> > would use it, but the use cases _are_ there), and you are mostly
> > ignoring them.
> My feeling too - It feels to me like Tejun is trying to railroad a broken
> non-solution into the system without regards for anyone else and by
> simply dismissing any other input.

The only other use case brought up is allowing use of vendor-specific
commands while burning CDs. Given that the usual burning has been
working well enough for years now, I don't really think that's a
strong enough reason to add full BPF filtering to SG_IO. It's just
highly unusual thing to do and there isn't strong enough use case for

To me, it feels like you guys are pushing a feature without strong
enough use case. So, I'm still pretty strongly against it.



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