linux-kernel - [PATCH v15 06/23] drm/virtio: Replace drm_gem_shmem_free() with drm_gem_object

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Message-ID: <20230827175449.1766701-7-dmitry.osipenko@collabora.com>
Date:   Sun, 27 Aug 2023 20:54:32 +0300
From:   Dmitry Osipenko <dmitry.osipenko@...labora.com>
To:     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>,
        Maxime Ripard <mripard@...nel.org>,
        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>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Mark Rutland <mark.rutland@....com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com, virtualization@...ts.linux-foundation.org,
        intel-gfx@...ts.freedesktop.org
Subject: [PATCH v15 06/23] drm/virtio: Replace drm_gem_shmem_free() with drm_gem_object_put()

Prepare virtio_gpu_object_create() to addition of memory shrinker support
by replacing open-coded drm_gem_shmem_free() with drm_gem_object_put() that
decrements GEM refcount to 0, which becomes important for drm-shmem because
it will start to use GEM's refcount during the shmem's BO freeing time in
order to prevent spurious lockdep warning about resv lock ordering vs
fs_reclaim code paths.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>
---
 drivers/gpu/drm/virtio/virtgpu_object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index c7e74cf13022..343b13428125 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -244,6 +244,6 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 err_put_id:
 	virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle);
 err_free_gem:
-	drm_gem_shmem_free(shmem_obj);
+	drm_gem_object_put(&bo->base.base);
 	return ret;
 }
-- 
2.41.0