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SubjectRe: [PATCH 4/5] cgroup: export cgroup_get() and cgroup_put()
Quoting Aditya Kali (adityakali@google.com):
> move cgroup_get() and cgroup_put() into cgroup.h so that
> they can be called from other places.
>
> Signed-off-by: Aditya Kali <adityakali@google.com>

Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

> ---
> include/linux/cgroup.h | 17 +++++++++++++++++
> kernel/cgroup.c | 18 ------------------
> 2 files changed, 17 insertions(+), 18 deletions(-)
>
> diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
> index 707c302..4ea477f 100644
> --- a/include/linux/cgroup.h
> +++ b/include/linux/cgroup.h
> @@ -530,6 +530,23 @@ static inline bool cgroup_on_dfl(const struct cgroup *cgrp)
> return cgrp->root == &cgrp_dfl_root;
> }
>
> +/* convenient tests for these bits */
> +static inline bool cgroup_is_dead(const struct cgroup *cgrp)
> +{
> + return !(cgrp->self.flags & CSS_ONLINE);
> +}
> +
> +static inline void cgroup_get(struct cgroup *cgrp)
> +{
> + WARN_ON_ONCE(cgroup_is_dead(cgrp));
> + css_get(&cgrp->self);
> +}
> +
> +static inline void cgroup_put(struct cgroup *cgrp)
> +{
> + css_put(&cgrp->self);
> +}
> +
> /* no synchronization, the result can only be used as a hint */
> static inline bool cgroup_has_tasks(struct cgroup *cgrp)
> {
> diff --git a/kernel/cgroup.c b/kernel/cgroup.c
> index 1671345..8552513 100644
> --- a/kernel/cgroup.c
> +++ b/kernel/cgroup.c
> @@ -185,7 +185,6 @@ static int need_forkexit_callback __read_mostly;
> static struct cftype cgroup_dfl_base_files[];
> static struct cftype cgroup_legacy_base_files[];
>
> -static void cgroup_put(struct cgroup *cgrp);
> static int rebind_subsystems(struct cgroup_root *dst_root,
> unsigned int ss_mask);
> static int cgroup_destroy_locked(struct cgroup *cgrp);
> @@ -286,12 +285,6 @@ static struct cgroup_subsys_state *cgroup_e_css(struct cgroup *cgrp,
> return cgroup_css(cgrp, ss);
> }
>
> -/* convenient tests for these bits */
> -static inline bool cgroup_is_dead(const struct cgroup *cgrp)
> -{
> - return !(cgrp->self.flags & CSS_ONLINE);
> -}
> -
> struct cgroup_subsys_state *of_css(struct kernfs_open_file *of)
> {
> struct cgroup *cgrp = of->kn->parent->priv;
> @@ -1029,17 +1022,6 @@ static umode_t cgroup_file_mode(const struct cftype *cft)
> return mode;
> }
>
> -static void cgroup_get(struct cgroup *cgrp)
> -{
> - WARN_ON_ONCE(cgroup_is_dead(cgrp));
> - css_get(&cgrp->self);
> -}
> -
> -static void cgroup_put(struct cgroup *cgrp)
> -{
> - css_put(&cgrp->self);
> -}
> -
> /**
> * cgroup_refresh_child_subsys_mask - update child_subsys_mask
> * @cgrp: the target cgroup
> --
> 2.0.0.526.g5318336
>
> _______________________________________________
> Containers mailing list
> Containers@lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/containers


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