Re: bio_chain: proposed solution for bio_alloc failure and large IO simplification

From: Andrew Morton (
Date: Sat Jun 15 2002 - 15:22:50 EST

"Adam J. Richter" wrote:
> >- It's tricky to determine how many bvecs are available in
> > a bio. There is no straightforward "how big is it" field
> > in struct bio.
> 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.

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This archive was generated by hypermail 2b29 : Sat Jun 15 2002 - 22:00:33 EST