On Thu, Nov 3, 2016 at 10:14 PM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > On Thu, 3 Nov 2016 22:00:58 +0100 Vitaly Wool <vitalywool@xxxxxxxxx> 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. Best regards, Vitaly -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>