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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: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Rientjes 2015-09-08 15:00:47 -07:00 committed by Linus Torvalds
parent 8989e4c7d4
commit 75e8f8b24c
1 changed files with 8 additions and 13 deletions
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21
mm/oom_kill.c
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@ -645,7 +645,6 @@ bool out_of_memory(struct oom_control *oc)
unsigned long freed = 0; unsigned long freed = 0;
unsigned int uninitialized_var(points); unsigned int uninitialized_var(points);
enum oom_constraint constraint = CONSTRAINT_NONE; enum oom_constraint constraint = CONSTRAINT_NONE;
int killed = 0;
if (oom_killer_disabled) if (oom_killer_disabled)
return false; return false;
@ -653,7 +652,7 @@ bool out_of_memory(struct oom_control *oc)
blocking_notifier_call_chain(&oom_notify_list, 0, &freed); blocking_notifier_call_chain(&oom_notify_list, 0, &freed);
if (freed > 0) if (freed > 0)
/* Got some memory back in the last second. */ /* Got some memory back in the last second. */
goto out; return true;
/* /*
* If current has a pending SIGKILL or is exiting, then automatically * 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 && if (current->mm &&
(fatal_signal_pending(current) || task_will_free_mem(current))) { (fatal_signal_pending(current) || task_will_free_mem(current))) {
mark_oom_victim(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); get_task_struct(current);
oom_kill_process(oc, current, 0, totalpages, NULL, oom_kill_process(oc, current, 0, totalpages, NULL,
"Out of memory (oom_kill_allocating_task)"); "Out of memory (oom_kill_allocating_task)");
goto out; return true;
} }
p = select_bad_process(oc, &points, totalpages); p = select_bad_process(oc, &points, totalpages);
@ -696,16 +695,12 @@ bool out_of_memory(struct oom_control *oc)
if (p && p != (void *)-1UL) { if (p && p != (void *)-1UL) {
oom_kill_process(oc, p, points, totalpages, NULL, oom_kill_process(oc, p, points, totalpages, NULL,
"Out of memory"); "Out of memory");
killed = 1; /*
} * Give the killed process a good chance to exit before trying
out: * to allocate memory again.
/* */
* Give the killed threads a good chance of exiting before trying to
* allocate memory again.
*/
if (killed)
schedule_timeout_killable(1); schedule_timeout_killable(1);
}
return true; return true;
} }