The patch titled
Subject: mm,oom_reaper: remove pointless kthread_run() error check
has been added to the -mm tree. Its filename is
mmoom_reaper-remove-pointless-kthread_run-error-check.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mmoom_reaper-remove-pointless-kthread_run-error-check.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mmoom_reaper-remove-pointless-kthread_run-error-check.patch
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------------------------------------------------------
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Subject: mm,oom_reaper: remove pointless kthread_run() error check
Since oom_init() is called before userspace processes start, memory
allocation failure for creating the OOM reaper kernel thread will let the
OOM killer call panic() rather than wake up the OOM reaper.
Link: http://lkml.kernel.org/r/1510137800-4602-1-git-send-email-penguin-kernel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/oom_kill.c | 8 --------
1 file changed, 8 deletions(-)
diff -puN mm/oom_kill.c~mmoom_reaper-remove-pointless-kthread_run-error-check mm/oom_kill.c
--- a/mm/oom_kill.c~mmoom_reaper-remove-pointless-kthread_run-error-check
+++ a/mm/oom_kill.c
@@ -641,9 +641,6 @@ static int oom_reaper(void *unused)
static void wake_oom_reaper(struct task_struct *tsk)
{
- if (!oom_reaper_th)
- return;
-
/* tsk is already queued? */
if (tsk == oom_reaper_list || tsk->oom_reaper_list)
return;
@@ -661,11 +658,6 @@ static void wake_oom_reaper(struct task_
static int __init oom_init(void)
{
oom_reaper_th = kthread_run(oom_reaper, NULL, "oom_reaper");
- if (IS_ERR(oom_reaper_th)) {
- pr_err("Unable to start OOM reaper %ld. Continuing regardless\n",
- PTR_ERR(oom_reaper_th));
- oom_reaper_th = NULL;
- }
return 0;
}
subsys_initcall(oom_init)
_
Patches currently in -mm which might be from penguin-kernel@xxxxxxxxxxxxxxxxxxx are
dentry-fix-kmemcheck-splat-at-take_dentry_name_snapshot.patch
mm-dont-warn-about-allocations-which-stall-for-too-long.patch
mmoom_reaper-remove-pointless-kthread_run-error-check.patch
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