The patch titled
Subject: oom: thaw threads if oom killed thread is frozen before deferring
has been removed from the -mm tree. Its filename was
oom-thaw-threads-if-oom-killed-thread-is-frozen-before-deferring.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: David Rientjes <rientjes@xxxxxxxxxx>
Subject: oom: thaw threads if oom killed thread is frozen before deferring
If a thread has been oom killed and is frozen, thaw it before returning to
the page allocator. Otherwise, it can stay frozen indefinitely and no
memory will be freed.
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Reported-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/oom_kill.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN mm/oom_kill.c~oom-thaw-threads-if-oom-killed-thread-is-frozen-before-deferring mm/oom_kill.c
--- a/mm/oom_kill.c~oom-thaw-threads-if-oom-killed-thread-is-frozen-before-deferring
+++ a/mm/oom_kill.c
@@ -32,6 +32,7 @@
#include <linux/mempolicy.h>
#include <linux/security.h>
#include <linux/ptrace.h>
+#include <linux/freezer.h>
int sysctl_panic_on_oom;
int sysctl_oom_kill_allocating_task;
@@ -317,8 +318,11 @@ static struct task_struct *select_bad_pr
* blocked waiting for another task which itself is waiting
* for memory. Is there a better alternative?
*/
- if (test_tsk_thread_flag(p, TIF_MEMDIE))
+ if (test_tsk_thread_flag(p, TIF_MEMDIE)) {
+ if (unlikely(frozen(p)))
+ thaw_process(p);
return ERR_PTR(-1UL);
+ }
if (!p->mm)
continue;
_
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
origin.patch
linux-next.patch
drm-avoid-switching-to-text-console-if-there-is-no-panic-timeout.patch
cpusets-avoid-looping-when-storing-to-mems_allowed-if-one-node-remains-set.patch
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