When cgclear is invoked against a cgroup v2 controller,
do not attempt to unmount the v2 controller.
Signed-off-by: Tom Hromatka <tom.hroma...@oracle.com>
---
src/config.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/config.c b/src/config.c
index 3ffa26371405..11d1da4897d0 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1331,6 +1331,7 @@ static int cgroup_config_unload_controller(const struct
cgroup_mount_point *moun
struct cgroup_controller *cgc = NULL;
char path[FILENAME_MAX];
void *handle;
+ enum cg_version_t version;
cgroup = cgroup_new_cgroup(".");
if (cgroup == NULL)
@@ -1346,6 +1347,14 @@ static int cgroup_config_unload_controller(const struct
cgroup_mount_point *moun
if (ret != 0)
goto out_error;
+ ret = cgroup_get_controller_version(mount_info->name, &version);
+ if (ret != 0)
+ goto out_error;
+
+ if (version == CGROUP_V2)
+ /* do not unmount the controller */
+ goto out_error;
+
/* unmount everything */
ret = cgroup_get_subsys_mount_point_begin(mount_info->name, &handle,
path);
--
2.26.2
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