Messages in this thread | | | Date | Mon, 13 Dec 2021 11:31:44 -0500 | Subject | Re: [PATCH -next] lockdep: Use memset_startat() helper in reinit_class() | From | Waiman Long <> |
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On 12/13/21 08:26, Xiu Jianfeng wrote: > use memset_startat() helper to simplify the code, there is no functional > change in this patch. > > Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> > --- > kernel/locking/lockdep.c | 5 +---- > 1 file changed, 1 insertion(+), 4 deletions(-) > > diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c > index 4a882f83aeb9..89b3df51fd98 100644 > --- a/kernel/locking/lockdep.c > +++ b/kernel/locking/lockdep.c > @@ -6011,13 +6011,10 @@ static void zap_class(struct pending_free *pf, struct lock_class *class) > > static void reinit_class(struct lock_class *class) > { > - void *const p = class; > - const unsigned int offset = offsetof(struct lock_class, key); > - > WARN_ON_ONCE(!class->lock_entry.next); > WARN_ON_ONCE(!list_empty(&class->locks_after)); > WARN_ON_ONCE(!list_empty(&class->locks_before)); > - memset(p + offset, 0, sizeof(*class) - offset); > + memset_startat(class, 0, key); > WARN_ON_ONCE(!class->lock_entry.next); > WARN_ON_ONCE(!list_empty(&class->locks_after)); > WARN_ON_ONCE(!list_empty(&class->locks_before));
LGTM
Acked-by: Waiman Long <longman@redhat.com>
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