cleanup the RAID6 P/Q library v3

[Andrew Morton]

On Mon, 18 May 2026 07:17:43 +0200 Christoph Hellwig <hch at lst.de> wrote:

> this series cleans up the RAID6 P/Q library to match the recent updates
> to the RAID 5 XOR library and other CRC/crypto libraries.  This includes
> providing properly documented external interfaces, hiding the internals,
> using static_call instead of indirect calls and turning the user space
> test suite into an in-kernel kunit test which is also extended to
> improve coverage.

Cool, I'll add this to mm.git's mm-nonmm-unstable branch for some
linux-next testing.

AI review found quite a lot to talk about:
	https://sashiko.dev/#/patchset/20260518051804.462141-1-hch@lst.de