A BO that's already swapped would be added back to the swap-LRU list
for example if it 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.
Signed-off-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
---
drivers/gpu/drm/ttm/ttm_bo.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 97c3da6..7192473 100644
--- 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_object *bo)
list_add_tail(&bo->lru, &man->lru[bo->priority]);
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) &&
+ !bo->ttm->swap_storage) {
list_add_tail(&bo->swap,
&bo->glob->swap_lru[bo->priority]);
kref_get(&bo->list_kref);
--
2.7.4
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