oom: remove constraint argument from select_bad_process and __out_of_memory
select_bad_process() and __out_of_memory() doe not need their enum
oom_constraint arguments: it's possible to pass a NULL nodemask if
constraint == CONSTRAINT_MEMORY_POLICY in the caller, out_of_memory().
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index c29cf00..cba18c0 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -284,8 +284,7 @@
* (not docbooked, we don't want this one cluttering up the manual)
*/
static struct task_struct *select_bad_process(unsigned long *ppoints,
- struct mem_cgroup *mem, enum oom_constraint constraint,
- const nodemask_t *mask)
+ struct mem_cgroup *mem, const nodemask_t *nodemask)
{
struct task_struct *p;
struct task_struct *chosen = NULL;
@@ -301,9 +300,7 @@
continue;
if (mem && !task_in_mem_cgroup(p, mem))
continue;
- if (!has_intersects_mems_allowed(p,
- constraint == CONSTRAINT_MEMORY_POLICY ? mask :
- NULL))
+ if (!has_intersects_mems_allowed(p, nodemask))
continue;
/*
@@ -518,7 +515,7 @@
check_panic_on_oom(CONSTRAINT_MEMCG, gfp_mask, 0);
read_lock(&tasklist_lock);
retry:
- p = select_bad_process(&points, mem, CONSTRAINT_MEMCG, NULL);
+ p = select_bad_process(&points, mem, NULL);
if (!p || PTR_ERR(p) == -1UL)
goto out;
@@ -635,8 +632,7 @@
/*
* Must be called with tasklist_lock held for read.
*/
-static void __out_of_memory(gfp_t gfp_mask, int order,
- enum oom_constraint constraint, const nodemask_t *mask)
+static void __out_of_memory(gfp_t gfp_mask, int order, const nodemask_t *mask)
{
struct task_struct *p;
unsigned long points;
@@ -650,7 +646,7 @@
* Rambo mode: Shoot down a process and hope it solves whatever
* issues we may have.
*/
- p = select_bad_process(&points, NULL, constraint, mask);
+ p = select_bad_process(&points, NULL, mask);
if (PTR_ERR(p) == -1UL)
return;
@@ -708,7 +704,9 @@
constraint = constrained_alloc(zonelist, gfp_mask, nodemask);
check_panic_on_oom(constraint, gfp_mask, order);
read_lock(&tasklist_lock);
- __out_of_memory(gfp_mask, order, constraint, nodemask);
+ __out_of_memory(gfp_mask, order,
+ constraint == CONSTRAINT_MEMORY_POLICY ? nodemask :
+ NULL);
read_unlock(&tasklist_lock);
/*