[Devel] [PATCH v9 4/9] cgroup: exported __put_css_set and wrappers to cgroup.h

[Kirill Tkhai]

On 16.04.2020 18:09, Valeriy Vdovin wrote:
> Signed-off-by: Valeriy Vdovin <valeriy.vdovin at virtuozzo.com>

Reviewed-by: Kirill Tkhai <ktkhai at virtuozzo.com>

> ---
>  include/linux/cgroup.h | 20 ++++++++++++++++++++
>  kernel/cgroup.c        | 20 +-------------------
>  2 files changed, 21 insertions(+), 19 deletions(-)
> 
> diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
> index 0239518..0a42f93 100644
> --- a/include/linux/cgroup.h
> +++ b/include/linux/cgroup.h
> @@ -443,6 +443,26 @@ struct css_set {
>  };
>  
>  /*
> + * refcounted get/put for css_set objects
> + */
> +extern void __put_css_set(struct css_set *cg, int taskexit);
> +
> +static inline void get_css_set(struct css_set *cg)
> +{
> +	atomic_inc(&cg->refcount);
> +}
> +
> +static inline void put_css_set(struct css_set *cg)
> +{
> +	__put_css_set(cg, 0);
> +}
> +
> +static inline void put_css_set_taskexit(struct css_set *cg)
> +{
> +	__put_css_set(cg, 1);
> +}
> +
> +/*
>   * cgroup_map_cb is an abstract callback API for reporting map-valued
>   * control files
>   */
> diff --git a/kernel/cgroup.c b/kernel/cgroup.c
> index 9ea5b51..d664768 100644
> --- a/kernel/cgroup.c
> +++ b/kernel/cgroup.c
> @@ -333,7 +333,7 @@ static unsigned long css_set_hash(struct cgroup_subsys_state *css[])
>   * compiled into their kernel but not actually in use */
>  static int use_task_css_set_links __read_mostly;
>  
> -static void __put_css_set(struct css_set *cg, int taskexit)
> +void __put_css_set(struct css_set *cg, int taskexit)
>  {
>  	struct cg_cgroup_link *link;
>  	struct cg_cgroup_link *saved_link;
> @@ -382,24 +382,6 @@ static void __put_css_set(struct css_set *cg, int taskexit)
>  }
>  
>  /*
> - * refcounted get/put for css_set objects
> - */
> -static inline void get_css_set(struct css_set *cg)
> -{
> -	atomic_inc(&cg->refcount);
> -}
> -
> -static inline void put_css_set(struct css_set *cg)
> -{
> -	__put_css_set(cg, 0);
> -}
> -
> -static inline void put_css_set_taskexit(struct css_set *cg)
> -{
> -	__put_css_set(cg, 1);
> -}
> -
> -/*
>   * compare_css_sets - helper function for find_existing_css_set().
>   * @cg: candidate css_set being tested
>   * @old_cg: existing css_set for a task
>