cgroup/cgroup.c: replace 'of->kn->priv' with of_cft()

we have supplied the inline function: of_cft() in cgroup.h.

So replace the direct use 'of->kn->priv' with inline func
of_cft(), which is more readable.

Signed-off-by: Hui Su <sh_def@163.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 690f477d537cc8a51e2439d394799afb0bcbfa87..385f80cf7d0c451ef3d685f2f997b84837e04c5e 100644 (file)
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -3657,7 +3657,7 @@ static ssize_t cgroup_freeze_write(struct kernfs_open_file *of,
 
 static int cgroup_file_open(struct kernfs_open_file *of)
 {
-       struct cftype *cft = of->kn->priv;
+       struct cftype *cft = of_cft(of);
 
        if (cft->open)
                return cft->open(of);
@@ -3666,7 +3666,7 @@ static int cgroup_file_open(struct kernfs_open_file *of)
 
 static void cgroup_file_release(struct kernfs_open_file *of)
 {
-       struct cftype *cft = of->kn->priv;
+       struct cftype *cft = of_cft(of);
 
        if (cft->release)
                cft->release(of);
@@ -3677,7 +3677,7 @@ static ssize_t cgroup_file_write(struct kernfs_open_file *of, char *buf,
 {
        struct cgroup_namespace *ns = current->nsproxy->cgroup_ns;
        struct cgroup *cgrp = of->kn->parent->priv;
-       struct cftype *cft = of->kn->priv;
+       struct cftype *cft = of_cft(of);
        struct cgroup_subsys_state *css;
        int ret;
 
@@ -3727,7 +3727,7 @@ static ssize_t cgroup_file_write(struct kernfs_open_file *of, char *buf,
 
 static __poll_t cgroup_file_poll(struct kernfs_open_file *of, poll_table *pt)
 {
-       struct cftype *cft = of->kn->priv;
+       struct cftype *cft = of_cft(of);
 
        if (cft->poll)
                return cft->poll(of, pt);