The patch titled
Subject: mm: memcontrol: remove task_in_mem_cgroup()
has been added to the -mm tree. Its filename is
mm-oom-fix-oom_unkillable_task-for-memcg-ooms-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-oom-fix-oom_unkillable_task-for-memcg-ooms-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-oom-fix-oom_unkillable_task-for-memcg-ooms-fix.patch
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------------------------------------------------------
From: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Subject: mm: memcontrol: remove task_in_mem_cgroup()
oom_unkillable_task() no longer calls task_in_mem_cgroup().
Link: http://lkml.kernel.org/r/1560852154-14218-1-git-send-email-penguin-kernel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Roman Gushchin <guro@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memcontrol.h | 7 -------
mm/memcontrol.c | 26 --------------------------
2 files changed, 33 deletions(-)
--- a/include/linux/memcontrol.h~mm-oom-fix-oom_unkillable_task-for-memcg-ooms-fix
+++ a/include/linux/memcontrol.h
@@ -394,7 +394,6 @@ out:
struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *);
-bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg);
struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm);
@@ -874,12 +873,6 @@ static inline bool mm_match_cgroup(struc
{
return true;
}
-
-static inline bool task_in_mem_cgroup(struct task_struct *task,
- const struct mem_cgroup *memcg)
-{
- return true;
-}
static inline struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm)
{
--- a/mm/memcontrol.c~mm-oom-fix-oom_unkillable_task-for-memcg-ooms-fix
+++ a/mm/memcontrol.c
@@ -1259,32 +1259,6 @@ void mem_cgroup_update_lru_size(struct l
*lru_size += nr_pages;
}
-bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg)
-{
- struct mem_cgroup *task_memcg;
- struct task_struct *p;
- bool ret;
-
- p = find_lock_task_mm(task);
- if (p) {
- task_memcg = get_mem_cgroup_from_mm(p->mm);
- task_unlock(p);
- } else {
- /*
- * All threads may have already detached their mm's, but the oom
- * killer still needs to detect if they have already been oom
- * killed to prevent needlessly killing additional tasks.
- */
- rcu_read_lock();
- task_memcg = mem_cgroup_from_task(task);
- css_get(&task_memcg->css);
- rcu_read_unlock();
- }
- ret = mem_cgroup_is_descendant(task_memcg, memcg);
- css_put(&task_memcg->css);
- return ret;
-}
-
/**
* mem_cgroup_margin - calculate chargeable space of a memory cgroup
* @memcg: the memory cgroup
_
Patches currently in -mm which might be from penguin-kernel@xxxxxxxxxxxxxxxxxxx are
mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks.patch
mm-memcontrol-use-css_task_iter_procs-at-mem_cgroup_scan_tasks-fix.patch
mm-oom-fix-oom_unkillable_task-for-memcg-ooms-fix.patch
mm-oom-remove-redundant-oom-score-normalization-at-select_bad_process.patch
info-task-hung-in-generic_file_write_iter.patch
info-task-hung-in-generic_file_write-fix.patch
