Messages in this thread | | | Date | Thu, 16 Aug 2007 09:21:15 +0200 | From | Jens Axboe <> | Subject | Re: [PATCH 002 of 5] Replace bio_data with blk_rq_data |
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On Thu, Aug 16 2007, Neil Brown wrote: > On Thursday August 16, jens.axboe@oracle.com wrote: > > On Thu, Aug 16 2007, NeilBrown wrote: > > > > > > Almost every call to bio_data is for the first bio > > > in a request. A future patch will add some accounting > > > information to 'struct request' which will need to be > > > used to find the start of the request in the bio. > > > So replace bio_data with blk_rq_data which takes a 'struct request *' > > > > > > The one exception is in dm-emc were using > > > page_address(bio->bi_io_vec[0].bv_page); > > > is appropriate. > > > > This (and 3+4) just look like preparatory patches if we want to merge > > the full patchset, not bug fixes. I seem to recall you had more bug > > fixes or cleanups in your patchset, maybe I was mistaken. So nak for now > > for 2-4, I'd apply 5 but it depends on the previous. > > > > I don't remember other bug fixes, but I'll look through and check.
OK, I'm properly remembering incorrectly then.
> 2 and 3 are very simple changes that - I think - make it clearer what > is happening.
To be honest, I don't see much win in using blk_rq_data() over bio_data() at all. I'd much much rather just see it go away!
> And I felt 5 was a sufficient improvement to justify it and 4...
5 is nice, I would like to apply that :-)
> I'll go hunting and see what other preliminaries I can find.
Thanks!
-- Jens Axboe
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