提交 75e8f8b2 编写于 作者: D David Rientjes 提交者: Linus Torvalds

mm, oom: remove unnecessary variable

The "killed" variable in out_of_memory() can be removed since the call to
oom_kill_process() where we should block to allow the process time to
exit is obvious.
Signed-off-by: NDavid Rientjes <rientjes@google.com>
Acked-by: NMichal Hocko <mhocko@suse.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 8989e4c7
......@@ -645,7 +645,6 @@ bool out_of_memory(struct oom_control *oc)
unsigned long freed = 0;
unsigned int uninitialized_var(points);
enum oom_constraint constraint = CONSTRAINT_NONE;
int killed = 0;
if (oom_killer_disabled)
return false;
......@@ -653,7 +652,7 @@ bool out_of_memory(struct oom_control *oc)
blocking_notifier_call_chain(&oom_notify_list, 0, &freed);
if (freed > 0)
/* Got some memory back in the last second. */
goto out;
return true;
/*
* If current has a pending SIGKILL or is exiting, then automatically
......@@ -666,7 +665,7 @@ bool out_of_memory(struct oom_control *oc)
if (current->mm &&
(fatal_signal_pending(current) || task_will_free_mem(current))) {
mark_oom_victim(current);
goto out;
return true;
}
/*
......@@ -684,7 +683,7 @@ bool out_of_memory(struct oom_control *oc)
get_task_struct(current);
oom_kill_process(oc, current, 0, totalpages, NULL,
"Out of memory (oom_kill_allocating_task)");
goto out;
return true;
}
p = select_bad_process(oc, &points, totalpages);
......@@ -696,16 +695,12 @@ bool out_of_memory(struct oom_control *oc)
if (p && p != (void *)-1UL) {
oom_kill_process(oc, p, points, totalpages, NULL,
"Out of memory");
killed = 1;
}
out:
/*
* Give the killed threads a good chance of exiting before trying to
* allocate memory again.
*/
if (killed)
/*
* Give the killed process a good chance to exit before trying
* to allocate memory again.
*/
schedule_timeout_killable(1);
}
return true;
}
......
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