linux-kernel - Re: [PATCH v18 09/26] drm/shmem-helper: Switch drm_gem_shmem

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 24 Nov 2023 11:48:44 +0100
From:   Maxime Ripard <mripard@...nel.org>
To:     Dmitry Osipenko <dmitry.osipenko@...labora.com>
Cc:     David Airlie <airlied@...il.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Gurchetan Singh <gurchetansingh@...omium.org>,
        Chia-I Wu <olvaffe@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Christian König <christian.koenig@....com>,
        Qiang Yu <yuq825@...il.com>,
        Steven Price <steven.price@....com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Emma Anholt <emma@...olt.net>, Melissa Wen <mwen@...lia.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com, virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v18 09/26] drm/shmem-helper: Switch
 drm_gem_shmem_vmap/vunmap to use pin/unpin

On Mon, Oct 30, 2023 at 02:01:48AM +0300, Dmitry Osipenko wrote:
> The vmapped pages shall be pinned in memory and previously get/put_pages()
> were implicitly hard-pinning/unpinning the pages. This will no longer be
> the case with addition of memory shrinker because pages_use_count > 0 won't
> determine anymore whether pages are hard-pinned (they will be soft-pinned),
> while the new pages_pin_count will do the hard-pinning. Switch the
> vmap/vunmap() to use pin/unpin() functions in a preparation of addition
> of the memory shrinker support to drm-shmem.
> 
> Reviewed-by: Boris Brezillon <boris.brezillon@...labora.com>
> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>

The naming convention discussion aside, and once it's settled and fixed:
Acked-by: Maxime Ripard <mripard@...nel.org>

Maxime

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)