Re: [PATCH 03/13] scsi: unify allocation of scsi command and sensebuffer
From: Christoph Hellwig
Date: Mon May 25 2009 - 06:42:33 EST
On Mon, May 25, 2009 at 01:33:42PM +0300, Boaz Harrosh wrote:
> 1. If we have a machine with few type of hosts active each with it's own
> cmnd_slab we end up with many more slabs then today. Even though at the
> end they all happen to be of the same size. (With the pool reserves it
> can get big also).
Note that this should be optional. Device not having their own
per-command structure would continue using the global pools. Those
that have their own per-command structures already have their own pools
> Hosts specify an size_of_private_command at host template, which might include
> the common-scsi_cmnd + sense_buffer + private_cmnd + optional scsi_ptr +
> bidi_data_buffer + ...
That sounds fine, too.
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