On 11-09-20, 12:11, pet...@infradead.org wrote: > On Wed, Sep 02, 2020 at 12:54:41PM +0530, Viresh Kumar wrote: > > + atomic_t reset_pending; > > > + atomic_set(&stats->reset_pending, 0); > > + if (atomic_read(&stats->reset_pending)) > > + bool pending = atomic_read(&stats->reset_pending); > > + atomic_set(&stats->reset_pending, 1); > > + bool pending = atomic_read(&stats->reset_pending); > > + if (atomic_read(&stats->reset_pending)) > > What do you think atomic_t is doing for you?
I was trying to avoid races while two writes are going in parallel, but obviously as this isn't a RMW operation, it won't result in anything for me. Maybe what I should be doing is just READ_ONCE()/WRITE_ONCE()? So the other side doesn't see any intermediate value that was never meant to be set/read ? -- viresh
