Sorry, I don't understand... On 04/30, Peter Zijlstra wrote: > > Thaw then does the reverse, frobs lockdep
Yes, in particular it does
lockdep_sb_freeze_acquire()
percpu_rwsem_acquire()
sem->rw_sem.owner = current;
> and then does: percpu_up_write().
>
> percpu_up_write() on up_write(). And note how __up_write() has:
>
> DEBUG_RWSEMS_WARN_ON(sem->owner != current, sem);
and everything looks correct, sem->owner == current by the time
thaw_super_locked() does percpu_up_write/up_write.
Oleg.
