Re: [PATCH v2 5/8] kernel: convert process/thread iterators to for_each_*_rculock

On 09/07, Ye Liu wrote:

From: Ye Liu <liuye@kylinos.cn>

Replace the manual rcu_read_lock()/rcu_read_unlock() and guard(rcu)
pairs combined with for_each_process(), for_each_thread() and
for_each_process_thread() loops across kernel/ with the
for_each_*_rculock() macros, which scope the RCU read lock to the
loop body via scoped_guard(rcu).

No functional change.

Signed-off-by: Ye Liu <liuye@kylinos.cn>
Acked-by: Michal Hocko <mhocko@suse.com>
---
Changes in v2:
  - Rename *_rcu to *_rculock
  - Rename stale 'unlock:' label to 'out:' in hung_task.c (Günther Noack)
 kernel/cpu.c             |  4 +---
 kernel/freezer.c         |  4 +---
 kernel/hung_task.c       | 11 ++++-------
 kernel/locking/lockdep.c |  4 +---
 kernel/rcu/update.c      |  4 +---
 kernel/sched/core.c      |  3 +--
 kernel/sched/debug.c     |  4 +---
 kernel/trace/fgraph.c    |  8 ++------
 kernel/unwind/deferred.c |  3 +--

Reviewed-by: Oleg Nesterov <oleg@redhat.com>