On Mon, 2007-05-14 at 17:26 +0200, Tejun Heo wrote:
> Unlocking ap->lock and ssleeping don't work because SCSI commands can
> be issued from completion path without context. Reimplement delayed
> completion by allowing translation functions to override
> qc->scsidone(), storing the original completion function to
> scmd->scsi_done() and overriding qc->scsidone() with a function which
> schedules delayed invocation of scmd->scsi_done().
>
> This isn't pretty at all but all the ugly parts are thankfully
> contained in the stop translation path where the compat feature is
> implemented.
>
> Signed-off-by: Tejun Heo <[email protected]>
Heh, very clever, but a bit of a hack (however, no better way I can see
to do it given the layering constraints).
Acked-by: James Bottomley <[email protected]>
James
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