Change-Id: Id8bd4d1ecff9f3ab14355e2dbd1c59b9fe824e01
Signed-off-by: Roger He <hongbo...@amd.com>
---
drivers/gpu/drm/ttm/ttm_page_alloc.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c
b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index 343db0b..82d40c6 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -444,11 +444,13 @@ ttm_pool_shrink_scan(struct shrinker *shrink, struct
shrink_control *sc)
pool = &_manager->pools[(i + pool_offset)%NUM_POOLS];
/* OK to use static buffer since global mutex is held. */
nr_free_pool = (nr_free >> pool->order);
- if (nr_free_pool == 0)
- continue;
+ if (!nr_free_pool && pool->order)
+ nr_free_pool = 1;
shrink_pages = ttm_page_pool_free(pool, nr_free_pool, true);
freed += ((nr_free_pool - shrink_pages) << pool->order);
+ if (freed >= sc->nr_to_scan)
+ break;
}
mutex_unlock(&lock);
return freed;
--
2.7.4
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