On Thu, 3 Nov 2016 22:24:07 +0100 Vitaly Wool <[email protected]> wrote:
> On Thu, Nov 3, 2016 at 10:14 PM, Andrew Morton > <[email protected]> wrote: > > On Thu, 3 Nov 2016 22:00:58 +0100 Vitaly Wool <[email protected]> wrote: > > > >> This patch converts pages_nr per-pool counter to atomic64_t. > > > > Which is slower. > > > > Presumably there is a reason for making this change. This reason > > should be described in the changelog. > > The reason [which I thought was somewhat obvious :) ] is that there > won't be a need to take a per-pool lock to read or modify that > counter. But the patch didn't change the locking. And as far as I can tell, neither does "z3fold: extend compaction function".
