On Tue 27-10-20 16:02:56, Muchun Song wrote: > We can reuse the code of mem_cgroup_lruvec() to simplify the code > of the mem_cgroup_page_lruvec().
yes, removing the code duplication is reasonable. But ... > > Signed-off-by: Muchun Song <songmuc...@bytedance.com> > --- > include/linux/memcontrol.h | 44 +++++++++++++++++++++++++++----------- > mm/memcontrol.c | 40 ---------------------------------- > 2 files changed, 32 insertions(+), 52 deletions(-) > > diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h > index 95807bf6be64..5e8480e54cd8 100644 > --- a/include/linux/memcontrol.h > +++ b/include/linux/memcontrol.h > @@ -451,16 +451,9 @@ mem_cgroup_nodeinfo(struct mem_cgroup *memcg, int nid) > return memcg->nodeinfo[nid]; > } > > -/** > - * mem_cgroup_lruvec - get the lru list vector for a memcg & node > - * @memcg: memcg of the wanted lruvec > - * > - * Returns the lru list vector holding pages for a given @memcg & > - * @node combination. This can be the node lruvec, if the memory > - * controller is disabled. > - */ > -static inline struct lruvec *mem_cgroup_lruvec(struct mem_cgroup *memcg, > - struct pglist_data *pgdat) > +static inline struct lruvec *mem_cgroup_node_lruvec(struct mem_cgroup *memcg, > + struct pglist_data *pgdat, > + int nid) This is just wrong interface. Either take nid or pgdat. You do not want both because that just begs for wrong usage. -- Michal Hocko SUSE Labs
