Commit 1d5be6b287c8efc87(cgroup: move module ref handling into
rebind_subsystems()) makes parse_cgroupfs_options() no longer
takes refcounts on subsystems.
And unified hierachy makes parse_cgroupfs_options not need to
call with cgroup_mutex held to protect the cgroup_subsys[].
So this patch cleanups these comment and BUG_ON().
Signed-off-by: Jianyu Zhan <nasa4836@xxxxxxxxx>
---
kernel/cgroup.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 2412cb7..b261798 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1222,10 +1222,7 @@ struct cgroup_sb_opts {
};
/*
- * Convert a hierarchy specifier into a bitmask of subsystems and
- * flags. Call with cgroup_mutex held to protect the cgroup_subsys[]
- * array. This function takes refcounts on subsystems to be used, unless it
- * returns error, in which case no refcounts are taken.
+ * Convert a hierarchy specifier into a bitmask of subsystems and flags.
*/
static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
{
@@ -1235,8 +1232,6 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
struct cgroup_subsys *ss;
int i;
- BUG_ON(!mutex_is_locked(&cgroup_mutex));
-
#ifdef CONFIG_CPUSETS
mask = ~(1UL << cpuset_cgrp_id);
#endif
--
1.9.0.GIT
_______________________________________________
Containers mailing list
Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linuxfoundation.org/mailman/listinfo/containers
