On 4/22/20 10:46 PM, Roman Gushchin wrote:
> To convert memcg and lruvec slab counters to bytes there must be
> a way to change these counters without touching node counters.
> Factor out __mod_memcg_lruvec_state() out of __mod_lruvec_state().
>
> Signed-off-by: Roman Gushchin <g...@fb.com>
Reviewed-by: Vlastimil Babka <vba...@suse.cz>
Nit below:
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -713,30 +713,14 @@ parent_nodeinfo(struct mem_cgroup_per_node *pn, int nid)
> return mem_cgroup_nodeinfo(parent, nid);
> }
>
> -/**
> - * __mod_lruvec_state - update lruvec memory statistics
> - * @lruvec: the lruvec
> - * @idx: the stat item
> - * @val: delta to add to the counter, can be negative
> - *
> - * The lruvec is the intersection of the NUMA node and a cgroup. This
> - * function updates the all three counters that are affected by a
> - * change of state at this level: per-node, per-cgroup, per-lruvec.
> - */
> -void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
> - int val)
> +void __mod_memcg_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
> + int val)
> {
> pg_data_t *pgdat = lruvec_pgdat(lruvec);
Looks like the pgdat can now be moved into the MEMCG_CHARGE_BATCH if().
