From: David Hildenbrand <david@redhat.com>
To: Matthew Wilcox <willy@infradead.org>,
Vitaly Wool <vitaly.wool@konsulko.se>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org,
linux-kernel@vger.kernel.org, Igor Belousov <igor.b@beldev.am>
Subject: Re: [PATCH] mm/zswap: export zswap API to modules
Date: Mon, 23 Jun 2025 21:33:14 +0200 [thread overview]
Message-ID: <04013158-841d-48cc-9687-6c6e75fe65d1@redhat.com> (raw)
In-Reply-To: <aFW6xI4m15JepI8Y@casper.infradead.org>
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
next prev parent reply other threads:[~2025-06-23 19:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 19:35 [PATCH] mm/zswap: export zswap API to modules Vitaly Wool
2025-06-20 19:47 ` Matthew Wilcox
2025-06-23 10:10 ` Vitaly Wool
2025-06-23 19:33 ` David Hildenbrand [this message]
2025-06-23 5:11 ` Christoph Hellwig
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