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Subject[PATCH 3.16 142/410] drm/ttm: fix adding foreign BOs to the swap LRU
3.16.57-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Christian König <christian.koenig@amd.com>

commit ed704a43e84cc536081423dcd3491acf2791aaeb upstream.

It doesn't make any sense to try to swap out imported BOs.

Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/gpu/drm/ttm/ttm_bo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -175,7 +175,7 @@ void ttm_bo_add_to_lru(struct ttm_buffer
list_add_tail(&bo->lru, &man->lru);
kref_get(&bo->list_kref);

- if (bo->ttm != NULL) {
+ if (bo->ttm && !(bo->ttm->page_flags & TTM_PAGE_FLAG_SG)) {
list_add_tail(&bo->swap, &bo->glob->swap_lru);
kref_get(&bo->list_kref);
}
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