[PATCH 23/28] xor: add a better public API

[Andrew Morton]

On Fri, 27 Mar 2026 07:16:55 +0100 Christoph Hellwig <hch at lst.de> wrote:

> xor_blocks is very annoying to use, because it is limited to 4 + 1
> sources / destinations, has an odd argument order and is completely
> undocumented.
> 
> Lift the code that loops around it from btrfs and async_tx/async_xor into
> common code under the name xor_gen and properly document it.

Something funny here - two different patches with the same title and
changelog.

If you can send over new versions of title&changelog I can paste that in.