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

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Message-ID: <aFW6xI4m15JepI8Y@casper.infradead.org>
Date: Fri, 20 Jun 2025 20:47:16 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Vitaly Wool <vitaly.wool@...sulko.se>
Cc: linux-mm@...ck.org, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, Igor Belousov <igor.b@...dev.am>
Subject: Re: [PATCH] mm/zswap: export zswap API to modules

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.