From: Andrew Morton <akpm@linux-foundation.org>
To: <xu.xin16@zte.com.cn>
Cc: <david@kernel.org>, <chengming.zhou@linux.dev>,
<hughd@google.com>, <wang.yaxin@zte.com.cn>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>, <ljs@kernel.org>,
<corbet@lwn.net>
Subject: Re: [PATCH v6 0/6] KSM: performance optimizations for rmap_walk_ksm
Date: Fri, 22 May 2026 20:28:24 -0700 [thread overview]
Message-ID: <20260522202824.fccba46554fb6223e63d685c@linux-foundation.org> (raw)
In-Reply-To: <20260522105234715fKI7KSsjC5XpEVMwoV6rI@zte.com.cn>
On Fri, 22 May 2026 10:52:34 +0800 (CST) <xu.xin16@zte.com.cn> wrote:
> This series fixes a severe KSM reverse-mapping performance problem
> that can freeze applications for hundreds of milliseconds under
> memory pressure especially when a lot of unrelated VMAs sharing a
> single anon_vma.
Thanks. I agree that this behaviour is quite obnoxious and getting it
addressed is quite desirable.
So I'd normally merge this in its present unreviewed state in order to
push things along a bit, but the AI review gives me pause:
https://sashiko.dev/#/patchset/20260522105234715fKI7KSsjC5XpEVMwoV6rI@zte.com.cn
Can you please take a look, decide what (if any) changes are needed?
next prev parent reply other threads:[~2026-05-23 3:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-22 2:52 [PATCH v6 0/6] KSM: performance optimizations for rmap_walk_ksm xu.xin16
2026-05-22 2:54 ` [PATCH v6 1/6] mm/rmap: add tracepoint for rmap_walk xu.xin16
2026-05-22 2:56 ` [PATCH v6 2/6] tools/testing: add rmap walk latency benchmark for KSM, anonymous and file pages xu.xin16
2026-05-22 2:57 ` [PATCH v6 3/6] MAINTAINERS: add myself as reviewer for rmap section xu.xin16
2026-05-22 3:00 ` [PATCH v6 4/6] ksm: add pgoff into ksm_rmap_item xu.xin16
2026-05-22 3:01 ` [PATCH v6 5/6] ksm: Optimize rmap_walk_ksm by passing a suitable pgoff xu.xin16
2026-05-22 3:02 ` [PATCH v6 6/6] ksm: add mremap selftests for ksm_rmap_walk xu.xin16
2026-05-23 3:28 ` Andrew Morton [this message]
2026-05-23 4:13 ` 答复: [PATCH v6 0/6] KSM: performance optimizations for rmap_walk_ksm xu.xin16
2026-05-29 7:56 ` Lorenzo Stoakes
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=20260522202824.fccba46554fb6223e63d685c@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=chengming.zhou@linux.dev \
--cc=corbet@lwn.net \
--cc=david@kernel.org \
--cc=hughd@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=ljs@kernel.org \
--cc=wang.yaxin@zte.com.cn \
--cc=xu.xin16@zte.com.cn \
/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