Re: [PATCH] mm/zswap: export zswap API to modules

[David Hildenbrand]

On 20.06.25 21:47, Matthew Wilcox wrote:
> On Fri, Jun 20, 2025 at 09:35:52PM +0200, Vitaly Wool wrote:
> > There is no reason to not let modules use zswap capabilies to
> > densely store unused pages in RAM. This will allow to remove some
> > homebrew solutions for e.g. GPU drivers in favor of plainly using
> > zswap pool.
>
> I really think these should be _GPL exports.  And I'm not sure why the
> GPU drivers are using "homebrew solutions" instead of using the shmem
> APIs which work whether zswap is configured in or not.

In particular, because zswap is tightly glued to actual swap code (e.g., 
swap_writeout()), and we should review first if any such GPU user should 
really be talking to zswap directly.

--
Cheers,

David / dhildenb