linux-kernel - Re: [PATCH v3 1/3] mm: zswap: rename is_zswap_enabled() to zswap_is

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Date: Tue, 11 Jun 2024 14:59:15 +1200
From: Barry Song <21cnbao@...il.com>
To: Yosry Ahmed <yosryahmed@...gle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Johannes Weiner <hannes@...xchg.org>, 
	Nhat Pham <nphamcs@...il.com>, Chengming Zhou <chengming.zhou@...ux.dev>, 
	Chris Li <chrisl@...nel.org>, David Hildenbrand <david@...hat.com>, 
	Matthew Wilcox <willy@...radead.org>, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3] mm: zswap: rename is_zswap_enabled() to zswap_is_enabled()

On Tue, Jun 11, 2024 at 2:45 PM Yosry Ahmed <yosryahmed@...gle.com> wrote:
>
> In preparation of introducing a similar function, rename
> is_zswap_enabled() to use zswap_* prefix like other zswap functions.
>
> Signed-off-by: Yosry Ahmed <yosryahmed@...gle.com>

Reviewed-by: Barry Song <baohua@...nel.org>

> ---
>  include/linux/zswap.h | 4 ++--
>  mm/memcontrol.c       | 2 +-
>  mm/zswap.c            | 2 +-
>  3 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/include/linux/zswap.h b/include/linux/zswap.h
> index 2a85b941db975..ce5e7bfe8f1ec 100644
> --- a/include/linux/zswap.h
> +++ b/include/linux/zswap.h
> @@ -35,7 +35,7 @@ void zswap_swapoff(int type);
>  void zswap_memcg_offline_cleanup(struct mem_cgroup *memcg);
>  void zswap_lruvec_state_init(struct lruvec *lruvec);
>  void zswap_folio_swapin(struct folio *folio);
> -bool is_zswap_enabled(void);
> +bool zswap_is_enabled(void);
>  #else
>
>  struct zswap_lruvec_state {};
> @@ -60,7 +60,7 @@ static inline void zswap_memcg_offline_cleanup(struct mem_cgroup *memcg) {}
>  static inline void zswap_lruvec_state_init(struct lruvec *lruvec) {}
>  static inline void zswap_folio_swapin(struct folio *folio) {}
>
> -static inline bool is_zswap_enabled(void)
> +static inline bool zswap_is_enabled(void)
>  {
>         return false;
>  }
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 1303ed01bb5e5..a811dfff10cda 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -8469,7 +8469,7 @@ void obj_cgroup_uncharge_zswap(struct obj_cgroup *objcg, size_t size)
>  bool mem_cgroup_zswap_writeback_enabled(struct mem_cgroup *memcg)
>  {
>         /* if zswap is disabled, do not block pages going to the swapping device */
> -       return !is_zswap_enabled() || !memcg || READ_ONCE(memcg->zswap_writeback);
> +       return !zswap_is_enabled() || !memcg || READ_ONCE(memcg->zswap_writeback);
>  }
>
>  static u64 zswap_current_read(struct cgroup_subsys_state *css,
> diff --git a/mm/zswap.c b/mm/zswap.c
> index b9b35ef86d9be..a8c8dd8cfe6f5 100644
> --- a/mm/zswap.c
> +++ b/mm/zswap.c
> @@ -131,7 +131,7 @@ static bool zswap_shrinker_enabled = IS_ENABLED(
>                 CONFIG_ZSWAP_SHRINKER_DEFAULT_ON);
>  module_param_named(shrinker_enabled, zswap_shrinker_enabled, bool, 0644);
>
> -bool is_zswap_enabled(void)
> +bool zswap_is_enabled(void)
>  {
>         return zswap_enabled;
>  }
> --
> 2.45.2.505.gda0bf45e8d-goog
>