>> Can't I make a macro to do a table lookup from bio->bi_max?
>Not really. If I do
> bio_alloc(GFP_KERNEL, 27);
>then I'll get a 32-slot bvec. But presumably, I don't
>want to put more than 27 pages into it.
If you called bio_alloc with a smaller number, that would
just be the result of a small IO that you knew could not generate
more iovecs than that. So, that scenario will not happen.
If that scenario did happen, by the way, it would still
be safe. If you cannot handle the larger request for some reason
that is not apparent to q->one_more_bvec, then you would make
your own one_more_bvec routine (probably a wrapper).
Adam J. Richter __ ______________ 575 Oroville Road
adam@yggdrasil.com \ / Milpitas, California 95035
+1 408 309-6081 | g g d r a s i l United States of America
"Free Software For The Rest Of Us."
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