On Fri, 2016-08-05 at 18:48 +0800, Herbert Xu wrote: > On Fri, Aug 05, 2016 at 08:16:53AM +0200, Johannes Berg wrote: > > > > Hm. Would you rather allocate a separate head entry for the > > hashtable, > > or chain the entries? > > My plan is to build support for this directly into rhashtable. > So I'm adding a struct rhlist_head that would be used in place > of rhash_head for these cases and it'll carry an extra pointer > for the list of identical entries. > > I will then add an additional layer of insert/lookup interfaces > for rhlist_head.
Oh, ok. > So bottom-line is that if you have no identical entries that you > only incur an extra 8 bytes per-object. > Right. Thanks! johannes
