Re: transport_do_task_sg_chain() still needed?

[Roland Dreier <roland@xxxxxxxxxxxxxxx>]

On Wed, Mar 21, 2012 at 5:47 PM, Nicholas A. Bellinger
<nab@xxxxxxxxxxxxxxx> wrote:
> For > 1 task operation in transport_allocate_data_tasks(), the
> transport_do_task_sg_chain() is still required (along with an extra SGL
> per se_task->task_sg[] for the link) in order for a se_cmd's SGLs to be
> made into a single walkable list using scatterlist.h primitives.

OK, that's the part I don't understand.  It seems like
transport_allocate_data_tasks()
will always make the individual task_sg by taking apart the cmd_sg
that's passed in,
and that's the only place that I can see where we create multiple
tasks for a single
cmd.  So why do we need to splice the task_sgs back together, when we have the
original cmd_sg in one piece from the beginning?

 - R.
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