This allows users of css_id() to know the largest possible css_id value.
This knowledge can be used to build per-cgroup bitmaps.
Signed-off-by: Greg Thelen <gthelen@xxxxxxxxxx>
---
include/linux/cgroup.h | 1 +
kernel/cgroup.c | 1 -
2 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index ab4ac0c..5eb6543 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -624,6 +624,7 @@ bool css_is_ancestor(struct cgroup_subsys_state *cg,
const struct cgroup_subsys_state *root);
/* Get id and depth of css */
+#define CSS_ID_MAX (65535)
unsigned short css_id(struct cgroup_subsys_state *css);
unsigned short css_depth(struct cgroup_subsys_state *css);
struct cgroup_subsys_state *cgroup_css_from_dir(struct file *f, int id);
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 2731d11..ab7e7a7 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -129,7 +129,6 @@ static struct cgroupfs_root rootnode;
* CSS ID -- ID per subsys's Cgroup Subsys State(CSS). used only when
* cgroup_subsys->use_id != 0.
*/
-#define CSS_ID_MAX (65535)
struct css_id {
/*
* The css to which this ID points. This pointer is set to valid value
--
1.7.3.1
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