Hello,
On Tue 17-03-15 12:56:30, Jan Kara wrote:
> After a long pause I'm sending second version of my patch series to abstract
> vma handling from the various media drivers. After this patch set drivers have
> to know much less details about vmas, their types, and locking. My motivation
> for the series is that I want to change get_user_pages() locking and I want to
> handle subtle locking details in as few places as possible.
>
> The core of the series is the new helper get_vaddr_pfns() which is given a
> virtual address and it fills in PFNs into provided array. If PFNs correspond
> to
> normal pages it also grabs references to these pages. The difference from
> get_user_pages() is that this function can also deal with pfnmap, mixed, and
> io
> mappings which is what the media drivers need.
>
> I have tested the patches with vivid driver so at least vb2 code got some
> exposure. Conversion of other drivers was just compile-tested so I'd like to
> ask respective maintainers if they could have a look. Also I'd like to ask mm
> folks to check patch 2/9 implementing the helper. Thanks!
Ping? Any reactions?
Honza
--
Jan Kara <j...@suse.cz>
SUSE Labs, CR
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