Re: [PATCH v4 06/11] md/raid5: get rid of bio_fits_rdev()

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On Mon, May 25, 2015 at 7:17 AM, Christoph Hellwig <hch@xxxxxx> wrote:
> On Mon, May 25, 2015 at 05:54:14PM +1000, NeilBrown wrote:
>> Did I write that?  I guess I did :-(
>> I meant *after*.   Don't get rid of bio_fits_rdev until split_bio is in
>> chunk_aligned_read().
>
> I suspect the whole series could use some reordering.

Nice reordering.
I'll do this.

Thanks.

>
> patch 1:
>
>  add ->bio_split and blk_queue_split
>
> patch 2..n:
>
>  one for each non-trivial driver that implements ->merge_bvec_fn to
>  remove it and instead split bios in ->make_request.  The md patch
>  to do the right thing in chunk_aligned_read goes into the general
>  md patch here.  The bcache patch also goes into this series.
>
> patch n+1:
>
>  - add blk_queue_split calls for remaining trivial drivers
>
> patch n+2:
>
>  - remove ->merge_bvec_fn and checking of max_sectors a for all
>    drivers, simplify bio_add_page
>
> patch n+2:
>
>  - remove splitting in blkdev_issue_discard
>
> patch n+3
>
>  - remove bio_fits_rdev
>
> patch n+4
>
>  - remove bio_get_nr_vecs
>
> patch n+4
>
>  - use bio_add_page
>
> patch n+5
>
>  - update documentation
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