On Tue 07-03-17 14:43:49, Tejun Heo wrote: > Hello, > > On Tue, Mar 07, 2017 at 12:14:20PM +0100, Jan Kara wrote: > > > Given that this isn't a super hot path, I think it'd be far better to > > > stick to a simpler synchronization mechanism. > > > > I'd be happy to do so however struct gendisk does not have any lock in it > > and introducing a special lock just for that seems awkward. > > I think even a awkward shared lock is better than memory barriers. > Barriers are the trickiest locking construct to get right and we > really shouldn't using that unless absolutely necessary. OK, I'll try to come up with something. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
