Unverified Commit 5fc6bef1 authored by Christian Brauner's avatar Christian Brauner
Browse files

cgroup: split namespace into separate header 



We have dedicated headers for all namespace types. Add one for the
cgroup namespace as well. Now it's consistent for all namespace types
and easy to figure out what to include.

Acked-by: default avatarTejun Heo <tj@kernel.org>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent f74ca6da

include/linux/cgroup.h

+1 −50
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
#include <linux/kernel_stat.h>



#include <linux/cgroup-defs.h>

#include <linux/cgroup_namespace.h>



struct kernel_clone_args;
@@ -783,56 +784,6 @@ static inline void cgroup_sk_free(struct sock_cgroup_data *skcd) {} 


#endif	/* CONFIG_CGROUP_DATA */



struct cgroup_namespace {

	struct ns_common	ns;

	struct user_namespace	*user_ns;

	struct ucounts		*ucounts;

	struct css_set          *root_cset;

};



extern struct cgroup_namespace init_cgroup_ns;



#ifdef CONFIG_CGROUPS



static inline struct cgroup_namespace *to_cg_ns(struct ns_common *ns)

{

	return container_of(ns, struct cgroup_namespace, ns);

}



void free_cgroup_ns(struct cgroup_namespace *ns);



struct cgroup_namespace *copy_cgroup_ns(unsigned long flags,

					struct user_namespace *user_ns,

					struct cgroup_namespace *old_ns);



int cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen,

		   struct cgroup_namespace *ns);



static inline void get_cgroup_ns(struct cgroup_namespace *ns)

{

	refcount_inc(&ns->ns.count);

}



static inline void put_cgroup_ns(struct cgroup_namespace *ns)

{

	if (refcount_dec_and_test(&ns->ns.count))

		free_cgroup_ns(ns);

}



#else /* !CONFIG_CGROUPS */



static inline void free_cgroup_ns(struct cgroup_namespace *ns) { }

static inline struct cgroup_namespace *

copy_cgroup_ns(unsigned long flags, struct user_namespace *user_ns,

	       struct cgroup_namespace *old_ns)

{

	return old_ns;

}



static inline void get_cgroup_ns(struct cgroup_namespace *ns) { }

static inline void put_cgroup_ns(struct cgroup_namespace *ns) { }



#endif /* !CONFIG_CGROUPS */



#ifdef CONFIG_CGROUPS

include/linux/cgroup_namespace.h

0 → 100644
+56 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _LINUX_CGROUP_NAMESPACE_H

#define _LINUX_CGROUP_NAMESPACE_H



struct cgroup_namespace {

	struct ns_common	ns;

	struct user_namespace	*user_ns;

	struct ucounts		*ucounts;

	struct css_set          *root_cset;

};



extern struct cgroup_namespace init_cgroup_ns;



#ifdef CONFIG_CGROUPS



static inline struct cgroup_namespace *to_cg_ns(struct ns_common *ns)

{

	return container_of(ns, struct cgroup_namespace, ns);

}



void free_cgroup_ns(struct cgroup_namespace *ns);



struct cgroup_namespace *copy_cgroup_ns(unsigned long flags,

					struct user_namespace *user_ns,

					struct cgroup_namespace *old_ns);



int cgroup_path_ns(struct cgroup *cgrp, char *buf, size_t buflen,

		   struct cgroup_namespace *ns);



static inline void get_cgroup_ns(struct cgroup_namespace *ns)

{

	refcount_inc(&ns->ns.count);

}



static inline void put_cgroup_ns(struct cgroup_namespace *ns)

{

	if (refcount_dec_and_test(&ns->ns.count))

		free_cgroup_ns(ns);

}



#else /* !CONFIG_CGROUPS */



static inline void free_cgroup_ns(struct cgroup_namespace *ns) { }

static inline struct cgroup_namespace *

copy_cgroup_ns(unsigned long flags, struct user_namespace *user_ns,

	       struct cgroup_namespace *old_ns)

{

	return old_ns;

}



static inline void get_cgroup_ns(struct cgroup_namespace *ns) { }

static inline void put_cgroup_ns(struct cgroup_namespace *ns) { }



#endif /* !CONFIG_CGROUPS */



#endif /* _LINUX_CGROUP_NAMESPACE_H */