Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebieder...

[linux-2.6-microblaze.git] / mm / oom_kill.c

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 2cc9b23..7c74dcc 100644 (file)
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -53,6 +53,14 @@ int sysctl_panic_on_oom;
 int sysctl_oom_kill_allocating_task;
 int sysctl_oom_dump_tasks = 1;
 
+/*
+ * Serializes oom killer invocations (out_of_memory()) from all contexts to
+ * prevent from over eager oom killing (e.g. when the oom killer is invoked
+ * from different domains).
+ *
+ * oom_killer_disable() relies on this lock to stabilize oom_killer_disabled
+ * and mark_oom_victim
+ */
 DEFINE_MUTEX(oom_lock);
 
 #ifdef CONFIG_NUMA
@@ -1077,15 +1085,9 @@ bool out_of_memory(struct oom_control *oc)
                dump_header(oc, NULL);
                panic("Out of memory and no killable processes...\n");
        }
-       if (oc->chosen && oc->chosen != (void *)-1UL) {
+       if (oc->chosen && oc->chosen != (void *)-1UL)
                oom_kill_process(oc, !is_memcg_oom(oc) ? "Out of memory" :
                                 "Memory cgroup out of memory");
-               /*
-                * Give the killed process a good chance to exit before trying
-                * to allocate memory again.
-                */
-               schedule_timeout_killable(1);
-       }
        return !!oc->chosen;
 }