On 26/01/2015 07:24, Fam Zheng wrote: >> > Do the entire lookup under RCU, which avoids atomic operations. > address_space_get_flatview() already is RCU protected, I don't see why this > patch is necessary. Could you explain?
It's just an optimization; flatview_ref/flatview_unref do atomic_inc/atomic_dec and this patch avoids that. Paolo
