Re: [PATCH] SCSI IOCTL: Check for device deletion [was Re:__elv_add_request OOPS]

[Parag Warudkar]

On Wed, 25 May 2011, Linus Torvalds wrote:

> On Wed, May 25, 2011 at 1:18 PM, Parag Warudkar <parag.lkml@xxxxxxxxx> wrote:
> >        SDEV_OFFLINE,           /* Device offlined (by error handling or
> >                                 * user request */
> 
> So how do you fix the error or online it again? No chance it should
> have commands passed to it to do that?

Yeah - that makes sense. By that logic, looks like we can only disallow 
for SDEV_DEL (if we decide to do that check here).

> I don't know. My point is that I don't see why we should look at the
> state at this point at all. We do that _later_.

If we can do it later, well and good. I just didn't think it would hurt to 
check upfront in ioctl if we are dealing with a dead device.

Parag