Hi Everyone,

Due to lack of information, I think I'll go ahead and pick up a simple
solution for this(i.e. the code I attached previously to set a flag
event_driven in scsi_device to let sr skip events poll) and send a new
series out for you to review. After all, I can't wait forever...

Please feel free to let me know if you don't think I should send a new
series with the above mentioned solution.

Thanks a lot for your(all of you) kind help and comments.

-Aaron

On 12/11/2012 01:10 PM, Tejun Heo wrote:

Hello, guys.

On Mon, Dec 10, 2012 at 11:26:07AM +0800, Aaron Lu wrote:

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The problem here is there's no easy to reach genhd from libata (or the
other way around) without going through sr.  I think we're gonna have
to have something in sr one way or the other.

Can't we do that via an event? It's a bit clunky because we need the
callback in the layer that sees the sdev, which is libata-scsi, we just
need an analogue of ata_scsi_media_change_notify, but ignoring and
allowing polling is essentially event driven as well, so it should all
work.  We'll need a listener in genhd, which might be trickier.

I'm not really following what you mean.  Can you please elaborate?
One way or the other, doesn't the notification have to bubble up
through SCSI?

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A colleague of mine reminded me that it's impolite to write something
like this, and here is my apology. I didn't mean to be rude, I'm sorry
for this if it made you feel uncomfortable.

Oh, no, it's not rude at all. I was just being distracted w/ other
stuff and lazy.  Sorry about that.

Thanks.