On Sat, Sep 02, 2023 at 06:07:28PM +0800, Liu Shixin wrote: > Since commit b6038942480e ("mm: memcg: add swapcache stat for memcg v2") > adds swapcache stat for the cgroup v2, it seems there is no reason to > hide it in memcg v1. Conversely, with swapcached it is more accurate to > evaluate the available memory for memcg. Why are we adding new features to the long deprecated cgroup v1?