Re: [PATCH 1/3] block: Rework bio_for_each_segment_all()

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On Thu, Dec 07, 2023 at 10:57:25AM -0700, Jens Axboe wrote:
> On 12/6/23 4:27 PM, Kent Overstreet wrote:
> > On Wed, Dec 06, 2023 at 03:40:38PM -0700, Jens Axboe wrote:
> >> On 12/6/23 2:34 PM, Kent Overstreet wrote:
> >>> On Wed, Nov 22, 2023 at 06:28:13PM -0500, Kent Overstreet wrote:
> >>>> This patch reworks bio_for_each_segment_all() to be more inline with how
> >>>> the other bio iterators work:
> >>>>
> >>>>  - bio_iter_all_peek() now returns a synthesized bio_vec; we don't stash
> >>>>    one in the iterator and pass a pointer to it - bad. This way makes it
> >>>>    clearer what's a constructed value vs. a reference to something
> >>>>    pre-existing, and it also will help with cleaning up and
> >>>>    consolidating code with bio_for_each_folio_all().
> >>>>
> >>>>  - We now provide bio_for_each_segment_all_continue(), for squashfs:
> >>>>    this makes their code clearer.
> >>>
> >>> Jens, can we _please_ get this series merged so bcachefs isn't reaching
> >>> into bio/bvec internals?
> >>
> >> Haven't gotten around to review it fully yet, and nobody else has either
> >> fwiw. Would be nice with some reviews.
> > 
> > Well, there was quite a bit of back and forth before, mainly over code
> > size - which was addressed; and the only tricky parts were to squashfs
> > which Phillip looked at and tested.
> 
> Would be nice to have that reflected in the commit, and would also be
> really nice to have the ext4 and iomap folks at least take a gander at
> patch 2 as well and ack it.

I've tested it thoroughly and those changes were purely mechanical.




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