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Date: Fri, 22 May 2026 20:28:24 -0700
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
Message-Id: <20260522202824.fccba46554fb6223e63d685c@linux-foundation.org>
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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?