ttm_lru_walk_for_evict
return ttm_lru_walk_for_evict(&swapout_walk.walk, bdev, man, target);
lret = ttm_lru_walk_for_evict(&evict_walk.walk, bdev, man, 1);
lret = ttm_lru_walk_for_evict(&evict_walk.walk, bdev, man, 1);
lret = ttm_lru_walk_for_evict(&evict_walk.walk, bdev, man, 1);
EXPORT_SYMBOL(ttm_lru_walk_for_evict);
s64 ttm_lru_walk_for_evict(struct ttm_lru_walk *walk, struct ttm_device *bdev,