From: Andrew Morton <akpm@linux-foundation.org>
To: Muchun Song <songmuchun@bytedance.com>
Cc: mike.kravetz@oracle.com, osalvador@suse.de, mhocko@suse.com,
song.bao.hua@hisilicon.com, david@redhat.com,
chenhuang5@huawei.com, bodeddub@amazon.com, corbet@lwn.net,
duanxiongchun@bytedance.com, fam.zheng@bytedance.com,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH v2 0/3] Split huge PMD mapping of vmemmap pages
Date: Mon, 14 Jun 2021 18:12:37 -0700 [thread overview]
Message-ID: <20210614181237.5513724624dde3ac930b75d8@linux-foundation.org> (raw)
In-Reply-To: <20210612094555.71344-1-songmuchun@bytedance.com>
On Sat, 12 Jun 2021 17:45:52 +0800 Muchun Song <songmuchun@bytedance.com> wrote:
> In order to reduce the difficulty of code review in series[1]. We disable
> huge PMD mapping of vmemmap pages when that feature is enabled. In this
> series, we do not disable huge PMD mapping of vmemmap pages anymore. We
> will split huge PMD mapping when needed. When HugeTLB pages are freed from
> the pool we do not attempt coalasce and move back to a PMD mapping because
> it is much more complex.
>
> [1] https://lore.kernel.org/linux-doc/20210510030027.56044-1-songmuchun@bytedance.com/
[1] had a nice [0/n] description but the v2 series lost that. I could
copy/paste the v1 changelogging but I am unsure that it has been
maintained appropriately for the v2 series.
I think I'll pass on this v2 pending additional review input. Please reinstate
the [0/n] overview if/when resending?
next prev parent reply other threads:[~2021-06-15 3:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-12 9:45 [PATCH v2 0/3] Split huge PMD mapping of vmemmap pages Muchun Song
2021-06-12 9:45 ` [PATCH v2 1/3] mm: sparsemem: split the " Muchun Song
2021-06-15 22:31 ` Mike Kravetz
2021-06-16 3:23 ` [External] " Muchun Song
2021-06-12 9:45 ` [PATCH v2 2/3] mm: sparsemem: use huge PMD mapping for " Muchun Song
2021-06-12 9:45 ` [PATCH v2 3/3] mm: hugetlb: introduce CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON Muchun Song
2021-06-15 23:00 ` Joao Martins
2021-06-16 3:04 ` [External] " Muchun Song
2021-06-15 1:12 ` Andrew Morton [this message]
2021-06-15 3:52 ` [PATCH v2 0/3] Split huge PMD mapping of vmemmap pages Mike Kravetz
2021-06-15 5:37 ` [External] " Muchun Song
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