3.16.57-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Felix Kuehling <[email protected]> commit fd5002d6a3c602664b07668a24df4ef7a43bf078 upstream. A BO that's already swapped would be added back to the swap-LRU list for example if its validation failed under high memory pressure. This could later lead to swapping it out again and leaking previous swap storage. This commit adds a condition to prevent that from happening. v2: Check page_flags instead of swap_storage Signed-off-by: Felix Kuehling <[email protected]> Reviewed-by: Christian König <[email protected]> Signed-off-by: Alex Deucher <[email protected]> [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings <[email protected]> --- drivers/gpu/drm/ttm/ttm_bo.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -175,7 +175,8 @@ void ttm_bo_add_to_lru(struct ttm_buffer list_add_tail(&bo->lru, &man->lru); kref_get(&bo->list_kref); - if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) { + if (bo->ttm && !(bo->ttm->page_flags & + (TTM_PAGE_FLAG_SG | TTM_PAGE_FLAG_SWAPPED))) { list_add_tail(&bo->swap, &bo->glob->swap_lru); kref_get(&bo->list_kref); }
