From: Ye Liu <[email protected]> Replace the manual rcu_read_lock()/rcu_read_unlock() pair combined with for_each_thread() loop in kernel/freezer.c with for_each_thread_rculock(), which scopes the RCU read lock to the loop body via scoped_guard(rcu).
No functional change. Signed-off-by: Ye Liu <[email protected]> Acked-by: Michal Hocko <[email protected]> Reviewed-by: SJ Park <[email protected]> Reviewed-by: Lorenzo Stoakes (ARM) <[email protected]> Reviewed-by: Oleg Nesterov <[email protected]> --- Changes in v3: - Split from kernel/ patch in v2 (Peter Zijlstra, Steven Rostedt) Changes in v2: - Rename *_rcu to *_rculock kernel/freezer.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/kernel/freezer.c b/kernel/freezer.c index a76bf957fb32..7a870f71dcf6 100644 --- a/kernel/freezer.c +++ b/kernel/freezer.c @@ -217,11 +217,9 @@ void thaw_process(struct task_struct *p) { struct task_struct *t; - rcu_read_lock(); - for_each_thread(p, t) { + for_each_thread_rculock(p, t) { __thaw_task(t); } - rcu_read_unlock(); } /** -- 2.25.1
