[Drbd-dev] [PATCH v6 0/8] block: prepare for multipage bvecs

Jens Axboe axboe at kernel.dk
Thu Jun 9 18:06:02 CEST 2016

On 05/30/2016 07:34 AM, Ming Lei wrote:
> Hi,
> Interests[1] have been shown in multipage bvecs, so this patchset
> try to prepare for the support and do two things:
> 1) the 1st 4 patches use bvec iterator to implement iterate_bvec(),
> then we can drop the non-standard way for iterating bvec, which
> can be thought as a good cleanup for lib/iov_iter.c
> 2) remove BIO_MAX_SECTORS and makre BIO_MAX_SIZE as obsolete, and
> now there is only one user for each. Once multipage bvecs is introduced,
> one bio may hold lots of sectors, and we should always use sort of
> BIO_MAX_VECS which should be introduced in future and is similiar
> with current BIO_MAX_PAGES.
> The only functional change is iterate_bvec():lib/iov_iter.c
> xfstests(-a auto) over loop aio is run for ext4/xfs to verify
> the change and no regression found with this patchset.

Added patches 1-7, still waiting for an answer on my reply to #8.

Jens Axboe

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