linux-kernel - Re: [PATCH v3] mm: add thp_utilization metrics to /proc/thp

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Date:   Thu, 11 Aug 2022 19:20:13 +0000
From:   "Alex Zhu (Kernel)" <alexlzhu@...com>
To:     Yu Zhao <yuzhao@...gle.com>
CC:     Yang Shi <shy828301@...il.com>, Rik van Riel <riel@...com>,
        Kernel Team <Kernel-team@...com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "willy@...radead.org" <willy@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        Ning Zhang <ningzhang@...ux.alibaba.com>,
        Miaohe Lin <linmiaohe@...wei.com>
Subject: Re: [PATCH v3] mm: add thp_utilization metrics to
 /proc/thp_utilization

Hi Yu,

I’ve updated your patch set from last year to work with folio and am testing it now. The functionality in split_huge_page() is the same as what I have. Was there any follow up work done later? 

If not, I would like to incorporate this into what I have, and then resubmit. Will reference the original patchset. We need this functionality for the shrinker, but even the changes to split_huge_page() by itself it should show some performance improvement when used by the existing deferred_split_huge_page(). 

Thanks,
Alex