Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
cgroup: support ns lookup
Support the generic ns lookup infrastructure to support file handles for
namespaces.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
+7
-2
+2
kernel/cgroup/cgroup.c
+2
kernel/cgroup/cgroup.c
···
59
59
#include <linux/sched/cputime.h>
60
60
#include <linux/sched/deadline.h>
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61
#include <linux/psi.h>
62
+
#include <linux/nstree.h>
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63
#include <net/sock.h>
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64
64
65
#define CREATE_TRACE_POINTS
···
6313
6312
WARN_ON(register_filesystem(&cpuset_fs_type));
6314
6313
#endif
6315
6314
6315
+
ns_tree_add(&init_cgroup_ns);
6316
6316
return 0;
6317
6317
}
6318
6318
+5
-2
kernel/cgroup/namespace.c
+5
-2
kernel/cgroup/namespace.c
···
5
5
#include <linux/slab.h>
6
6
#include <linux/nsproxy.h>
7
7
#include <linux/proc_ns.h>
8
-
8
+
#include <linux/nstree.h>
9
9
10
10
/* cgroup namespaces */
11
11
···
30
30
ret = ns_common_init(&new_ns->ns, &cgroupns_operations, true);
31
31
if (ret)
32
32
return ERR_PTR(ret);
33
+
ns_tree_add(new_ns);
33
34
return no_free_ptr(new_ns);
34
35
}
35
36
36
37
void free_cgroup_ns(struct cgroup_namespace *ns)
37
38
{
39
+
ns_tree_remove(ns);
38
40
put_css_set(ns->root_cset);
39
41
dec_cgroup_namespaces(ns->ucounts);
40
42
put_user_ns(ns->user_ns);
41
43
ns_free_inum(&ns->ns);
42
-
kfree(ns);
44
+
/* Concurrent nstree traversal depends on a grace period. */
45
+
kfree_rcu(ns, ns.ns_rcu);
43
46
}
44
47
EXPORT_SYMBOL(free_cgroup_ns);
45
48