Messages in this thread | | | From | Muchun Song <> | Date | Fri, 4 Mar 2022 20:16:46 +0800 | Subject | Re: [PATCH 04/16] mm/migration: reduce the rcu lock duration |
| |
On Fri, Mar 4, 2022 at 5:35 PM Miaohe Lin <linmiaohe@huawei.com> wrote: > > rcu_read_lock is required by grabbing the task refcount but it's not > needed for ptrace_may_access. So we could release the rcu lock after > task refcount is successfully grabbed to reduce the rcu holding time. > > Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Also simple.
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
| |