Re: [PATCHv2 15/28] thp: handle file COW faults

From: Dave Hansen
Date: Fri Feb 12 2016 - 13:36:31 EST


On 02/11/2016 06:21 AM, Kirill A. Shutemov wrote:
> File COW for THP is handled on pte level: just split the pmd.

More changelog. More comments, please.

We don't want to COW THP's because we'll waste memory? A COW that we
could handle with 4k, we would have to handle with 2M, and that's
inefficient and high-latency?

Seems like a good idea to me. It would just be nice to ensure every
reviewer doesn't have to think their way through it.