Re: [PATCH] psi: Treat ksm swapping in copy as memstall

[Johannes Weiner]

On Wed, Jan 19, 2022 at 06:13:54AM +0000, CGEL wrote:
> I did a test, when we use zram, it takes longer time for ksm copying than
> swap_readpage(). Ksm copying average takes 147263ns, swap_readpage()
> average takes 55639ns. So I think this patch is reasonable.

Ok, that sounds reasonable to me as well. Please add the
PageWorkingset() check and resubmit the patch. Thanks!