Re: [PATCH v3 1/4] block: refactor iov_count_pages() from bio_{copy,map}_user_iov()

[Christoph Hellwig]

On Thu, Apr 23, 2015 at 04:04:32PM -0700, Ming Lin wrote:
> From: Kent Overstreet <kent.overstreet@xxxxxxxxx>
> 
> Refactor the common part in bio_copy_user_iov() and
> __bio_map_user_iov() to separate out iov_count_pages() into the general
> iov_iter API, instead of open coding iov iterations as done previously.
> 
> This commit should contain only literal replacements, without
> functional changes.


Weve already got a iov_iter_npages and iov_iter_alignment,
the SG_IO code should probably be switched to those instead.
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