Re: [PATCH v8 4/6] mm: memcg: add per-memcg zswap writeback stat (fix)

[Yosry Ahmed <yosryahmed@google.com>]

On Tue, Dec 5, 2023 at 11:33 AM Nhat Pham <nphamcs@gmail.com> wrote:
>
> Rename ZSWP_WB to ZSWPWB to better match the existing counters naming
> scheme.
>
> Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
> Signed-off-by: Nhat Pham <nphamcs@gmail.com>

For the original patch + this fix:

Reviewed-by: Yosry Ahmed <yosryahmed@google.com>

> ---
>  include/linux/vm_event_item.h | 2 +-
>  mm/memcontrol.c               | 2 +-
>  mm/vmstat.c                   | 2 +-
>  mm/zswap.c                    | 4 ++--
>  4 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
> index f4569ad98edf..747943bc8cc2 100644
> --- a/include/linux/vm_event_item.h
> +++ b/include/linux/vm_event_item.h
> @@ -142,7 +142,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
>  #ifdef CONFIG_ZSWAP
>                 ZSWPIN,
>                 ZSWPOUT,
> -               ZSWP_WB,
> +               ZSWPWB,
>  #endif
>  #ifdef CONFIG_X86
>                 DIRECT_MAP_LEVEL2_SPLIT,
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 21d79249c8b4..0286b7d38832 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -703,7 +703,7 @@ static const unsigned int memcg_vm_event_stat[] = {
>  #if defined(CONFIG_MEMCG_KMEM) && defined(CONFIG_ZSWAP)
>         ZSWPIN,
>         ZSWPOUT,
> -       ZSWP_WB,
> +       ZSWPWB,
>  #endif
>  #ifdef CONFIG_TRANSPARENT_HUGEPAGE
>         THP_FAULT_ALLOC,
> diff --git a/mm/vmstat.c b/mm/vmstat.c
> index 2249f85e4a87..cfd8d8256f8e 100644
> --- a/mm/vmstat.c
> +++ b/mm/vmstat.c
> @@ -1401,7 +1401,7 @@ const char * const vmstat_text[] = {
>  #ifdef CONFIG_ZSWAP
>         "zswpin",
>         "zswpout",
> -       "zswp_wb",
> +       "zswpwb",
>  #endif
>  #ifdef CONFIG_X86
>         "direct_map_level2_splits",
> diff --git a/mm/zswap.c b/mm/zswap.c
> index c65b8ccc6b72..0fb0945c0031 100644
> --- a/mm/zswap.c
> +++ b/mm/zswap.c
> @@ -761,9 +761,9 @@ static enum lru_status shrink_memcg_cb(struct list_head *item, struct list_lru_o
>         zswap_written_back_pages++;
>
>         if (entry->objcg)
> -               count_objcg_event(entry->objcg, ZSWP_WB);
> +               count_objcg_event(entry->objcg, ZSWPWB);
>
> -       count_vm_event(ZSWP_WB);
> +       count_vm_event(ZSWPWB);
>         /*
>          * Writeback started successfully, the page now belongs to the
>          * swapcache. Drop the entry from zswap - unless invalidate already
> --
> 2.34.1