On Thursday 20 December 2007 18:07:41 FUJITA Tomonori wrote:
> On Thu, 20 Dec 2007 16:45:18 +1100
>
> Rusty Russell <[email protected]> wrote:
> > OK, some fixes since last time, as I wade through more SCSI drivers.
> > Some drivers use "use_sg" as a flag to know whether the request_buffer is
> > a scatterlist: I don't need the counter, but I still need the flag, so I
> > fixed that in a more intuitive way (an explicit ->sg pointer in the cmd).
>
> use_sg and the request_buffer will be removed shortly.
>
> http://marc.info/?l=linux-scsi&m=119754650614813&w=2
Thanks! Is there a git tree somewhere with these changes?
> I think that we tried the similar idea before, scsi_sgtable, but we
> seem to settle in the current simple approach.
Yes, a scsi-specific solution is a bad idea: other people use sg.
Manipulating the magic chains is horrible; it looks simple to the places
which simply want to iterate through it, but it's awful for code which wants
to create them.
Cheers,
Rusty.
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