Re: [PATCH 00/12] block: cleanup direct access to bvec table

From: Jens Axboe
Date: Tue Nov 22 2016 - 10:55:02 EST

On 11/11/2016 05:05 AM, Ming Lei wrote:

This patchset cleans up direct access to bvec table.

The 1st patch passes bvec table to bio_init(), so that
direct access to bvec table in bio initialization is avoided.

For other patches, most of them uses bio_add_page()
to replace hardcode style of adding page to bvec,
and others avoids to access bio->bi_vcnt.

The most special one is to use bvec iterator helpers
to implement .get_page/.next_page for dm-io.c

One big motivation is to prepare for supporting multipage
bvec, but this patchset is one good cleanup too even not
for that purpose.

I've added the series, except 6-8, the dm parts. I updated some of the
descriptions/subjects to read a little better.

Jens Axboe