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    Subject[PATCH 05/14] cgroup: relocate cgroup_[try]get/put()
    Date
    Relocate cgroup_get(), cgroup_tryget() and cgroup_put() upwards.  This
    is pure code reorganization to prepare for future changes.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    ---
    kernel/cgroup.c | 32 ++++++++++++++++----------------
    1 file changed, 16 insertions(+), 16 deletions(-)

    diff --git a/kernel/cgroup.c b/kernel/cgroup.c
    index 855313d..ab5c9a5 100644
    --- a/kernel/cgroup.c
    +++ b/kernel/cgroup.c
    @@ -428,6 +428,22 @@ static inline bool cgroup_is_dead(const struct cgroup *cgrp)
    return !(cgrp->self.flags & CSS_ONLINE);
    }

    +static void cgroup_get(struct cgroup *cgrp)
    +{
    + WARN_ON_ONCE(cgroup_is_dead(cgrp));
    + css_get(&cgrp->self);
    +}
    +
    +static bool cgroup_tryget(struct cgroup *cgrp)
    +{
    + return css_tryget(&cgrp->self);
    +}
    +
    +static void cgroup_put(struct cgroup *cgrp)
    +{
    + css_put(&cgrp->self);
    +}
    +
    struct cgroup_subsys_state *of_css(struct kernfs_open_file *of)
    {
    struct cgroup *cgrp = of->kn->parent->priv;
    @@ -1177,22 +1193,6 @@ 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 bool cgroup_tryget(struct cgroup *cgrp)
    -{
    - return css_tryget(&cgrp->self);
    -}
    -
    -static void cgroup_put(struct cgroup *cgrp)
    -{
    - css_put(&cgrp->self);
    -}
    -
    /**
    * cgroup_calc_child_subsys_mask - calculate child_subsys_mask
    * @cgrp: the target cgroup
    --
    2.4.3


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