The patch titled
Subject: mm, oom_reaper: clear oom_reaper_list before clearing TIF_MEMDIE
has been added to the -mm tree. Its filename is
mm-oom_reaper-clear-tif_memdie-for-all-tasks-queued-for-oom_reaper-clear-oom_reaper_list-before-clearing-tif_memdie.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-oom_reaper-clear-tif_memdie-for-all-tasks-queued-for-oom_reaper-clear-oom_reaper_list-before-clearing-tif_memdie.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-oom_reaper-clear-tif_memdie-for-all-tasks-queued-for-oom_reaper-clear-oom_reaper_list-before-clearing-tif_memdie.patch
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------------------------------------------------------
From: Michal Hocko <mhocko@xxxxxxxx>
Subject: mm, oom_reaper: clear oom_reaper_list before clearing TIF_MEMDIE
As per Tetsuo:
: oom_reaper() will need to do "tsk->oom_reaper_list = NULL;" due to
:
: if (tsk == oom_reaper_list || tsk->oom_reaper_list)
: return;
:
: test in wake_oom_reaper() if "[PATCH 3/3] mm, oom_reaper: clear
: TIF_MEMDIE for all tasks queued for oom_reaper" will select the same
: thread again
Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/oom_kill.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/oom_kill.c~mm-oom_reaper-clear-tif_memdie-for-all-tasks-queued-for-oom_reaper-clear-oom_reaper_list-before-clearing-tif_memdie mm/oom_kill.c
--- a/mm/oom_kill.c~mm-oom_reaper-clear-tif_memdie-for-all-tasks-queued-for-oom_reaper-clear-oom_reaper_list-before-clearing-tif_memdie
+++ a/mm/oom_kill.c
@@ -540,6 +540,7 @@ static void oom_reap_task(struct task_st
* for the oom victim right now because it cannot release its memory
* itself nor by the oom reaper.
*/
+ tsk->oom_reaper_list = NULL;
exit_oom_victim(tsk);
/* Drop a reference taken by wake_oom_reaper */
_
Patches currently in -mm which might be from mhocko@xxxxxxxx are
include-linux-nodemaskh-create-next_node_in-helper-fix.patch
mm-oom-move-gfp_nofs-check-to-out_of_memory.patch
oom-oom_reaper-try-to-reap-tasks-which-skip-regular-oom-killer-path.patch
oom-oom_reaper-try-to-reap-tasks-which-skip-regular-oom-killer-path-try-to-reap-tasks-which-skip-regular-memcg-oom-killer-path.patch
mm-oom_reaper-clear-tif_memdie-for-all-tasks-queued-for-oom_reaper.patch
mm-oom_reaper-clear-tif_memdie-for-all-tasks-queued-for-oom_reaper-clear-oom_reaper_list-before-clearing-tif_memdie.patch
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