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-rw-r--r--kernel/cpuset.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 0b361a0b58f6..e4d999929903 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1488,7 +1488,7 @@ static void cpuset_attach(struct cgroup_subsys_state *css,
/* static buf protected by cpuset_mutex */
static nodemask_t cpuset_attach_nodemask_to;
struct task_struct *task;
- struct task_struct *leader = cgroup_taskset_first(tset);
+ struct task_struct *leader;
struct cpuset *cs = css_cs(css);
struct cpuset *oldcs = cpuset_attach_old_cs;
@@ -1514,12 +1514,11 @@ static void cpuset_attach(struct cgroup_subsys_state *css,
}
/*
- * Change mm, possibly for multiple threads in a threadgroup. This
- * is expensive and may sleep and should be moved outside migration
- * path proper.
+ * Change mm for all threadgroup leaders. This is expensive and may
+ * sleep and should be moved outside migration path proper.
*/
cpuset_attach_nodemask_to = cs->effective_mems;
- if (thread_group_leader(leader)) {
+ cgroup_taskset_for_each_leader(leader, tset) {
struct mm_struct *mm = get_task_mm(leader);
if (mm) {