This was needed before to ensure that ->signal != 0 and do_each_thread()
is safe, see the commit b95c35e76b29b for details.
Today tsk->signal can't go away and for_each_thread(tsk) is always safe.
Signed-off-by: Oleg Nesterov <o...@redhat.com>
---
fs/proc/base.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index a11eb71..93e7754 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -579,11 +579,8 @@ static int proc_oom_score(struct seq_file *m, struct
pid_namespace *ns,
unsigned long totalpages = totalram_pages + total_swap_pages;
unsigned long points = 0;
- read_lock(&tasklist_lock);
- if (pid_alive(task))
- points = oom_badness(task, NULL, NULL, totalpages) *
- 1000 / totalpages;
- read_unlock(&tasklist_lock);
+ points = oom_badness(task, NULL, NULL, totalpages) *
+ 1000 / totalpages;
seq_printf(m, "%lu\n", points);
return 0;
--
2.5.0
