[PATCH] fold me "mm, oom_adj: make sure processes sharing mm have same view of oom_score_adj"

[Michal Hocko]

- skip over same thread group
- skip over kernel threads and global init

Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
---
 fs/proc/base.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/proc/base.c b/fs/proc/base.c
index f4fcd2954f42..164fe38022d2 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1104,8 +1104,11 @@ static int __set_oom_adj(struct file *file, int oom_adj, bool legacy)
 
 		rcu_read_lock();
 		for_each_process(p) {
-			/* do not touch kernel threads */
-			if (p->flags & PF_KTHREAD)
+			if (same_thread_group(task,p))
+				continue;
+
+			/* do not touch kernel threads or the global init */
+			if (p->flags & PF_KTHREAD || is_global_init(p))
 				continue;
 
 			task_lock(p);
-- 
2.8.1

-- 
Michal Hocko
SUSE Labs