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

From: Parag Warudkar
Date: Wed May 25 2011 - 16:23:05 EST




On Wed, 25 May 2011, James Bottomley wrote:

> On Wed, 2011-05-25 at 13:03 -0700, Linus Torvalds wrote:
> > On Wed, May 25, 2011 at 12:52 PM, Parag Warudkar <parag.lkml@xxxxxxxxx> wrote:
> > >
> > > +static inline int sdev_early_check(struct scsi_device *sdev)
> > > +{
> > > + if (!sdev || sdev->sdev_state == SDEV_DEL
> > > + || sdev->sdev_state > SDEV_QUIESCE)
> > > + return -ENXIO;
> > > + return 0;
> > > +}
> >
> > Can somebody explain why it's those states, and nothing else?
>
> The states are definitely wrong. QUIESCE shouldn't cause an error.
>
QUIESCE is not causing an error above - > QUIESCE is which per the
documentation is correct.

Parag
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