Messages in this thread |  | | Date | Tue, 6 Feb 2001 18:14:49 +0100 | From | Jens Axboe <> | Subject | Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait |
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On Tue, Feb 06 2001, Stephen C. Tweedie wrote: > > I don't think os. If we minimize the state in the IO container object, > > the lower levels could split them at their guess and the IO completion > > function just has to handle the case that it might be called for a smaller > > object. > > The whole point of the post was that it is merging, not splitting, > which is troublesome. How are you going to merge requests without > having chains of scatter-gather entities each with their own > completion callbacks?
You can't, the stuff I played with turned out to be horrible. At least with the current kiobuf I/O stuff, merging will have to be done before its submitted. And IMO we don't want to loose the ability to cluster buffers and requests in ll_rw_blk.
-- Jens Axboe
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