Ok, seems like the patches made it to the lists, while oyu only
send the cover letter to my address which is very strange.
> diff --git a/include/linux/uio.h b/include/linux/uio.h
> index 72d88566694e..af626eb970cf 100644
> --- a/include/linux/uio.h
> +++ b/include/linux/uio.h
> @@ -18,6 +18,8 @@ struct kvec {
> };
>
> enum iter_type {
> + ITER_BVEC_FLAG_FIXED = 2,
> +
> /* iter types */
> ITER_IOVEC = 4,
> ITER_KVEC = 8,
This is making the iter type even more of a mess than it already is.
I think we at least need placeholders for 0/1 here and an explicit
flags namespace, preferably after the types.
Then again I'd much prefer if we didn't even add the flag or at best
just add it for a short-term transition and move everyone over to the
new scheme. Otherwise the amount of different interfaces and supporting
code keeps exploding.
> @@ -29,8 +31,9 @@ enum iter_type {
> struct iov_iter {
> /*
> * Bit 0 is the read/write bit, set if we're writing.
> - * Bit 1 is the BVEC_FLAG_NO_REF bit, set if type is a bvec and
> - * the caller isn't expecting to drop a page reference when done.
> + * Bit 1 is the BVEC_FLAG_FIXED bit, set if type is a bvec and the
> + * caller ensures that page references and memory baking bvec won't
> + * go away until callees finish with them.
> */
> unsigned int type;
I think the comment needs to move to the enum.
