The patch titled
oom: remove constraint argument from select_bad_process and __out_of_memory
has been added to the -mm tree. Its filename is
oom-remove-constraint-argument-from-select_bad_process-and-__out_of_memory.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: oom: remove constraint argument from select_bad_process and __out_of_memory
From: David Rientjes <rientjes@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/oom_kill.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff -puN mm/oom_kill.c~oom-remove-constraint-argument-from-select_bad_process-and-__out_of_memory mm/oom_kill.c
--- a/mm/oom_kill.c~oom-remove-constraint-argument-from-select_bad_process-and-__out_of_memory
+++ a/mm/oom_kill.c
@@ -284,8 +284,7 @@ static enum oom_constraint constrained_a
* (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 @@ static struct task_struct *select_bad_pr
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 @@ void mem_cgroup_out_of_memory(struct mem
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 @@ static void clear_system_oom(void)
/*
* 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 @@ retry:
* 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 @@ void out_of_memory(struct zonelist *zone
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);
/*
_
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
avr32-invoke-oom-killer-from-page-fault.patch
oom-check-pf_kthread-instead-of-mm-to-skip-kthreads.patch
oom-pf_exiting-check-should-take-mm-into-account.patch
oom-introduce-find_lock_task_mm-to-fix-mm-false-positives.patch
oom-dump_tasks-use-find_lock_task_mm-too.patch
oom-improve-commentary-in-dump_tasks.patch
oom-dump_tasks-use-find_lock_task_mm-too-dump_tasks-use-find_lock_task_mm-too-fix.patch
oom-give-current-access-to-memory-reserves-if-it-has-been-killed.patch
oom-avoid-sending-exiting-tasks-a-sigkill.patch
oom-filter-tasks-not-sharing-the-same-cpuset.patch
oom-sacrifice-child-with-highest-badness-score-for-parent.patch
oom-sacrifice-child-with-highest-badness-score-for-parent-protect-dereferencing-of-tasks-comm.patch
oom-sacrifice-child-with-highest-badness-score-for-parent-fix.patch
oom-select-task-from-tasklist-for-mempolicy-ooms.patch
oom-select-task-from-tasklist-for-mempolicy-ooms-add-has_intersects_mems_allowed-uma-variant.patch
oom-select-task-from-tasklist-for-mempolicy-ooms-introduce-find_lock_task_mm-to-fix-mm-false-positives-fix.patch
oom-enable-oom-tasklist-dump-by-default.patch
oom-avoid-oom-killer-for-lowmem-allocations.patch
oom-extract-panic-helper-function.patch
oom-remove-special-handling-for-pagefault-ooms.patch
oom-move-sysctl-declarations-to-oomh.patch
oom-remove-unnecessary-code-and-cleanup.patch
oom-remove-constraint-argument-from-select_bad_process-and-__out_of_memory.patch
oom-fold-__out_of_memory-into-out_of_memory.patch
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