Re: [PATCH V6 00/30] block: support multipage bvec

[Christoph Hellwig <hch@infradead.org>]

І think the new naming scheme in this series is a nightmare.  It
confuses the heck out of me, and that is despite knowing many bits of
the block layer inside out, and reviewing previous series.

I think we need to take a step back and figure out what names what we
want in the end, and how we get there separately.

For the end result using bio_for_each_page in some form for the per-page
iteration seems like the only sensible idea, as that is what it does.

For the bio-vec iteration I'm fine with either bio_for_each_bvec as that
exactly explains what it does, or bio_for_each_segment to keep the
change at a minimum.

And in terms of how to get there: maybe we need to move all the drivers
and file systems to the new names first before the actual changes to
document all the intent.  For that using the bio_for_each_bvec variant
might be benefitial as it allows to seasily see the difference between
old uncovered code and the already converted one.