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authorTejun Heo <tj@kernel.org>2019-05-31 10:38:58 -0700
committerTejun Heo <tj@kernel.org>2019-05-31 10:38:58 -0700
commitc03cd7738a83b13739f00546166969342c8ff014 (patch)
tree6ac8b0e1001dbfc3c7eb8df089bc500aeeab9a24 /include/linux/cgroup-defs.h
parentb636fd38dc40113f853337a7d2a6885ad23b8811 (diff)
cgroup: Include dying leaders with live threads in PROCS iterations
CSS_TASK_ITER_PROCS currently iterates live group leaders; however, this means that a process with dying leader and live threads will be skipped. IOW, cgroup.procs might be empty while cgroup.threads isn't, which is confusing to say the least. Fix it by making cset track dying tasks and include dying leaders with live threads in PROCS iteration. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-and-tested-by: Topi Miettinen <toiwoton@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com>
Diffstat (limited to 'include/linux/cgroup-defs.h')
-rw-r--r--include/linux/cgroup-defs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 77258d276f93..1615b9c17e02 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -216,6 +216,7 @@ struct css_set {
*/
struct list_head tasks;
struct list_head mg_tasks;
+ struct list_head dying_tasks;
/* all css_task_iters currently walking this cset */
struct list_head task_iters;