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-rw-r--r--include/linux/cgroup-defs.h2
-rw-r--r--kernel/cgroup/cgroup-v1.c5
2 files changed, 3 insertions, 4 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index f1b3151ac30b..265da00a1a8b 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -238,7 +238,7 @@ struct css_set {
* Lists running through all tasks using this cgroup group.
* mg_tasks lists tasks which belong to this cset but are in the
* process of being migrated out or in. Protected by
- * css_set_rwsem, but, during migration, once tasks are moved to
+ * css_set_lock, but, during migration, once tasks are moved to
* mg_tasks, it can be read safely while holding cgroup_mutex.
*/
struct list_head tasks;
diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c
index c487ffef6652..76db6c67e39a 100644
--- a/kernel/cgroup/cgroup-v1.c
+++ b/kernel/cgroup/cgroup-v1.c
@@ -360,10 +360,9 @@ static int pidlist_array_load(struct cgroup *cgrp, enum cgroup_filetype type,
}
css_task_iter_end(&it);
length = n;
- /* now sort & (if procs) strip out duplicates */
+ /* now sort & strip out duplicates (tgids or recycled thread PIDs) */
sort(array, length, sizeof(pid_t), cmppid, NULL);
- if (type == CGROUP_FILE_PROCS)
- length = pidlist_uniq(array, length);
+ length = pidlist_uniq(array, length);
l = cgroup_pidlist_find_create(cgrp, type);
if (!l) {