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drm/ttm: fix LRU handling in ttm_buffer_object_transfer

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We need to set the NO_EVICT flag on the ghost object or otherwise we are
adding it to the LRU.

When it is added to the LRU we can run into a race between destroying
and evicting it again.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-11-29 16:25:10 +01:00 committed by Alex Deucher
parent c6888879fd
commit d6e820fcd4
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/ttm/ttm_bo_util.c
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@ -492,8 +492,10 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
if (!fbo) if (!fbo)
return -ENOMEM; return -ENOMEM;
ttm_bo_get(bo);
fbo->base = *bo; fbo->base = *bo;
fbo->base.mem.placement |= TTM_PL_FLAG_NO_EVICT;
ttm_bo_get(bo);
fbo->bo = bo; fbo->bo = bo;
/** /**