Hi, Andrew, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> writes: > On Thu, 31 Oct 2024 16:39:53 +0800 "Huang, Ying" <ying.huang@xxxxxxxxx> wrote: > >> However, on ARM64, it does introduce some regression for clearing pages >> from end to start. That needs to be addressed. I guess that the >> regression can be resolved via using more clearing from start to end >> (but not all). For example, can you take a look at the patch below? >> Which uses the similar framework as before, but clear each small trunk >> (mpage) from start to end. You can adjust MPAGE_NRPAGES to check when >> the regression can be restored. >> >> WARNING: the patch is only build tested. > > I'm holding this patch in mm-unstable because it's unclear (to me) that > this regression has been adequately addressed? Yes. This patch isn't ready to be merged yet. More works are needed to root cause the problem and implement the proper fix. I guess that Kefeng will continue to work on this. --- Best Regards, Huang, Ying
