Re: [SCSI] fix scsi_reap_target() device_del from atomic context

[Andrew Morton <akpm@osdl.org>]

James Bottomley <James.Bottomley@SteelEye.com> wrote:
>
> There is a potential improvement, in that could be done which is only to
> use the workqueue if we're in atomic context.  However, I elected to
> leave playing with that cleanup until after 2.6.15

We don't have a way of determining whether we're in atomic context
(in_atomic() only works with CONFIG_PREEMPT).  If scsi internally knows what
context things are in then that'll work OK.

> There is also the point that I now have two of these allocations of
> structures containing a workqueue and a pointer in separate instances.
> It does look like this might be an improvement to the API (i.e. a
> workqueue use that manages the allocation of the actual work_struct).

Perhaps you could use work_struct.data for the scsi_target* and get back to
the work_struct via container_of().