/*
* Now that the whole userspace is frozen we need to disbale
* the OOM killer to disallow any further interference with
- * killable tasks.
+ * killable tasks. There is no guarantee oom victims will
+ * ever reach a point they go away we have to wait with a timeout.
*/
- if (!error && !oom_killer_disable())
+ if (!error && !oom_killer_disable(msecs_to_jiffies(freeze_timeout_msecs)))
error = -EBUSY;
- /*
- * There is a hard to fix race between oom_reaper kernel thread
- * and oom_killer_disable. oom_reaper calls exit_oom_victim
- * before the victim reaches exit_mm so try to freeze all the tasks
- * again and catch such a left over task.
- */
- if (!error) {
- pr_info("Double checking all user space processes after OOM killer disable... ");
- error = try_to_freeze_tasks(true);
- pr_cont("\n");
- }
-
if (error)
thaw_processes();
return error;