On Fri, Sep 15, 2023 at 3:05 AM Liu Shixin <liushixin2@xxxxxxxxxx> wrote:
>
> Since commit b25806dcd3d5("mm: memcontrol: deprecate swapaccounting=0 mode")
> do_memsw_account() is synonymous with !cgroup_subsys_on_dfl(memory_cgrp_subsys),
> It always equals true in memcg1_stat_format(). Remove the unused code.
>
> Suggested-by: Michal Koutný <mkoutny@xxxxxxxx>
> Signed-off-by: Liu Shixin <liushixin2@xxxxxxxxxx>
Reviewed-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
> ---
> mm/memcontrol.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 78ea10c5a636..bb9a617be046 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -4112,8 +4112,6 @@ static void memcg1_stat_format(struct mem_cgroup *memcg, struct seq_buf *s)
> for (i = 0; i < ARRAY_SIZE(memcg1_stats); i++) {
> unsigned long nr;
>
> - if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account())
> - continue;
> nr = memcg_page_state_local(memcg, memcg1_stats[i]);
> seq_buf_printf(s, "%s %lu\n", memcg1_stat_names[i],
> nr * memcg_page_state_unit(memcg1_stats[i]));
> @@ -4136,15 +4134,12 @@ static void memcg1_stat_format(struct mem_cgroup *memcg, struct seq_buf *s)
> }
> seq_buf_printf(s, "hierarchical_memory_limit %llu\n",
> (u64)memory * PAGE_SIZE);
> - if (do_memsw_account())
> - seq_buf_printf(s, "hierarchical_memsw_limit %llu\n",
> - (u64)memsw * PAGE_SIZE);
> + seq_buf_printf(s, "hierarchical_memsw_limit %llu\n",
> + (u64)memsw * PAGE_SIZE);
>
> for (i = 0; i < ARRAY_SIZE(memcg1_stats); i++) {
> unsigned long nr;
>
> - if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account())
> - continue;
> nr = memcg_page_state(memcg, memcg1_stats[i]);
> seq_buf_printf(s, "total_%s %llu\n", memcg1_stat_names[i],
> (u64)nr * memcg_page_state_unit(memcg1_stats[i]));
> --
> 2.25.1
>
