Re: [PATCH v2 2/7] bvec/iter: disallow zero-length segment bvecs

[Matthew Wilcox]

On Sat, Jan 02, 2021 at 03:17:34PM +0000, Pavel Begunkov wrote:
> --- a/Documentation/filesystems/porting.rst
> +++ b/Documentation/filesystems/porting.rst
> @@ -865,3 +865,10 @@ no matter what.  Everything is handled by the caller.
>  
>  clone_private_mount() returns a longterm mount now, so the proper destructor of
>  its result is kern_unmount() or kern_unmount_array().
> +
> +---
> +
> +**mandatory**
> +
> +zero-length bvec segments are disallowed, they must be filtered out before
> +passed on to an iterator.

Why are you putting this in filesystems/porting?  Filesystems don't usually
generate bvecs ... there's nothing in this current series that stops them.
I'd suggest Documentation/block/biovecs.rst or biodoc.rst (and frankly,
biodoc.rst needs a good cleanup)