>> No preference seems in either way except for retaining

>> nr_to_reclaim == SWAP_CLUSTER_MAX and target_mem_cgroup == memcg.

>

> Setting  target_mem_cgroup here may be a very subtle change for

> subsequent processing.

> Regarding retraining nr_to_reclaim == SWAP_CLUSTER_MAX, it may not

> proper for direct reclaim, that may cause some stall if we iterate all

> memcgs here.

Mind posting a RFC to collect thoughts?