The patch titled
Subject: mm/oom_kill.c: remove thread group leader check in oom_evaluate_task()
has been added to the -mm tree. Its filename is
mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks-fix.patch
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------------------------------------------------------
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Subject: mm/oom_kill.c: remove thread group leader check in oom_evaluate_task()
Since mem_cgroup_scan_tasks() uses CSS_TASK_ITER_PROCS, only thread group
leaders will be scanned (unless dying leaders with live threads). Thus
d49ad9355420c743 ("mm, oom: prefer thread group leaders for display
purposes") makes little sense.
Link: http://lkml.kernel.org/r/1560853257-14934-1-git-send-email-penguin-kernel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Greg Thelen <gthelen@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/oom_kill.c | 3 ---
1 file changed, 3 deletions(-)
--- a/mm/oom_kill.c~mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks-fix
+++ a/mm/oom_kill.c
@@ -346,9 +346,6 @@ static int oom_evaluate_task(struct task
if (!points || points < oc->chosen_points)
goto next;
- /* Prefer thread group leaders for display purposes */
- if (points == oc->chosen_points && thread_group_leader(oc->chosen))
- goto next;
select:
if (oc->chosen)
put_task_struct(oc->chosen);
_
Patches currently in -mm which might be from penguin-kernel@xxxxxxxxxxxxxxxxxxx are
mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks.patch
mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks-fix.patch
mm-oom-remove-redundant-oom-score-normalization-at-select_bad_process.patch
info-task-hung-in-generic_file_write_iter.patch
info-task-hung-in-generic_file_write-fix.patch
