From: David Hildenbrand <david@redhat.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>,
Andrew Morton <akpm@linux-foundation.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
linux-mm@kvack.org
Cc: Zi Yan <ziy@nvidia.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Ryan Roberts <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>,
Barry Song <baohua@kernel.org>, Lance Yang <lance.yang@linux.dev>,
Liam.Howlett@oracle.com
Subject: Re: [PATCH 1/3] mm: mprotect: always skip dma pinned folio in prot_numa_skip()
Date: Mon, 13 Oct 2025 17:49:49 +0200 [thread overview]
Message-ID: <3b1dbaa5-d617-4b9c-b49c-94b46ad69672@redhat.com> (raw)
In-Reply-To: <20251013121536.2373249-2-wangkefeng.wang@huawei.com>
On 13.10.25 14:15, Kefeng Wang wrote:
> If the folio(even not CoW folio) is dma pinned, it can't be
> migrated, so always skip pinned folio to avoid a waste of cycles
> when folios migration.
Right. It's a historical artifact from pre-anon-exclusive days.
Acked-by: David Hildenbrand <david@redhat.com>
--
Cheers
David / dhildenb
next prev parent reply other threads:[~2025-10-13 15:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-13 12:15 [PATCH 0/3] mm: some optimizations for prot numa Kefeng Wang
2025-10-13 12:15 ` [PATCH 1/3] mm: mprotect: always skip dma pinned folio in prot_numa_skip() Kefeng Wang
2025-10-13 15:12 ` Sidhartha Kumar
2025-10-13 15:49 ` David Hildenbrand [this message]
2025-10-14 1:42 ` Lance Yang
2025-10-13 12:15 ` [PATCH 2/3] mm: mprotect: avoid unnecessary struct page accessing if pte_protnone() Kefeng Wang
2025-10-13 15:22 ` Sidhartha Kumar
2025-10-13 15:53 ` David Hildenbrand
2025-10-14 6:06 ` Kefeng Wang
2025-10-14 7:16 ` David Hildenbrand
2025-10-14 8:02 ` Kefeng Wang
2025-10-14 8:56 ` David Hildenbrand
2025-10-14 9:19 ` Kefeng Wang
2025-10-13 12:15 ` [PATCH 3/3] mm: huge_memory: use prot_numa_skip() for pmd folio Kefeng Wang
2025-10-13 15:41 ` Sidhartha Kumar
2025-10-13 15:58 ` David Hildenbrand
2025-10-14 6:10 ` Kefeng Wang
2025-10-14 7:24 ` David Hildenbrand
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3b1dbaa5-d617-4b9c-b49c-94b46ad69672@redhat.com \
--to=david@redhat.com \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=baohua@kernel.org \
--cc=baolin.wang@linux.alibaba.com \
--cc=dev.jain@arm.com \
--cc=lance.yang@linux.dev \
--cc=linux-mm@kvack.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=ryan.roberts@arm.com \
--cc=wangkefeng.wang@huawei.com \
--cc=ziy@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox