From: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
To: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Andi Shyti <andi.shyti@kernel.org>,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
Jani Nikula <jani.nikula@linux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
Tvrtko Ursulin <tursulin@ursulin.net>,
Andi Shyti <andi.shyti@linux.intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Krzysztof Karas <krzysztof.karas@intel.com>,
Sebastian Brzezinka <sebastian.brzezinka@intel.com>,
Krzysztof Niemiec <krzysztof.niemiec@intel.com>
Subject: Re: [PATCH] drm/i915: Fix potential overflow of shmem scatterlist length
Date: Wed, 25 Feb 2026 18:29:12 +0100 [thread overview]
Message-ID: <10397304.EvYhyI6sBW@jkrzyszt-mobl2.ger.corp.intel.com> (raw)
In-Reply-To: <aZ8XaheEIW8Opb3Q@ashyti-mobl2.lan>
On Wednesday, 25 February 2026 16:38:18 CET Andi Shyti wrote:
> > > For clarity this can be written as
> > >
> > > nr_pages = min_t(unsigned long,
> > > folio_nr_pages(folio), page_count - i);
> > > nr_pages = min_t(unsigned long, nr_pages, max_pages);
> >
> > Do you think the min_array() is less clear? Let's see what others say.
>
> min_array() is clear, it's the ((unsigned long[]) { ... }) that
> iis nice and fancy but of difficult first read. But, as I said,
> it can stay, I don't have a strong opinion, maybe I'd have done
> the same.
Would you be more happy with a locally declared unsigned long table,
initalized with those 3 values, nr_pages - i and max_segment << PAGE_SHIFT
statically, folio_nr_pages(folio) once folio is ready, then passed to
min_array()?
Thanks,
Janusz
>
> Andi
>
next prev parent reply other threads:[~2026-02-25 17:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-24 9:49 [PATCH] drm/i915: Fix potential overflow of shmem scatterlist length Janusz Krzysztofik
2026-02-25 14:41 ` Andi Shyti
2026-02-25 15:11 ` Janusz Krzysztofik
2026-02-25 15:38 ` Andi Shyti
2026-02-25 17:29 ` Janusz Krzysztofik [this message]
2026-02-26 12:23 ` Andi Shyti
2026-02-26 13:02 ` Sebastian Brzezinka
2026-02-27 5:21 ` Claude review: " Claude Code Review Bot
2026-02-27 5:21 ` Claude Code Review Bot
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