On Tue, Dec 13, 2016 at 7:32 AM, Jiri Slaby <jslaby@xxxxxxx> wrote:
>
> Nope, blk_rq_map_user_iov above does not even have "const struct
> iov_iter *iter" as a parameter yet. Instead, "struct sg_iovec *iov" is
> there.
>
> So maybe, the patch is not even needed. But whoever can tell me for
> sure, please do so.
The issue is that we don't wand to get there through splice() creating
an iov that has kernel addresses in it, but I don't think 3.12 can do
that anyway - it would need an explicit splice function in the file
operations.
So I think 3.12 is fine without this. Al?
Linus
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