From: Lorenzo Stoakes <ljs@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: xu.xin16@zte.com.cn, david@kernel.org, chengming.zhou@linux.dev,
hughd@google.com, wang.yaxin@zte.com.cn, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, corbet@lwn.net
Subject: Re: [PATCH v6 0/6] KSM: performance optimizations for rmap_walk_ksm
Date: Fri, 29 May 2026 08:56:45 +0100 [thread overview]
Message-ID: <ahlF281drhpwUHU1@lucifer> (raw)
In-Reply-To: <20260522202824.fccba46554fb6223e63d685c@linux-foundation.org>
On Fri, May 22, 2026 at 08:28:24PM -0700, Andrew Morton wrote:
> 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?
I also plan to look through this!
Cheers, Lorenzo
prev parent reply other threads:[~2026-05-29 7:56 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 ` [PATCH v6 0/6] KSM: performance optimizations for rmap_walk_ksm Andrew Morton
2026-05-23 4:13 ` 答复: " xu.xin16
2026-05-29 7:56 ` Lorenzo Stoakes [this message]
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