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b=tLm+lc4VMjulDbH3IDfdYTiLafdXv9KILpJPabAUWZJZVA8g25lUIoxGD0Kmhx4+7 p1OBHCB+Ri3CblTvUY6PUxsfXxdBNA2u4XtPy+C56SeMZfObAnyKd9/JmEp1B5aK5m 9TJMEYD3C02tSJpsr8oJgCBOI2C3ptY1DsqUC5bg= Date: Thu, 13 Aug 2026 13:44:01 -0700 From: Andrew Morton To: Xueyuan Chen Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, zhaonanzhe@xiaomi.com, baohua@kernel.org, hannes@cmpxchg.org, ryncsn@gmail.com, youngjun.park@lge.com, baolin.wang@linux.alibaba.com, hughd@google.com, chrisl@kernel.org, shikemeng@huaweicloud.com, nphamcs@gmail.com, baoquan.he@linux.dev, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, david@kernel.org, ljs@kernel.org Subject: Re: [PATCH v6 0/4] mm: avoid large folio splits when swap is unavailable Message-Id: <20260813134401.a1fb632936fa3b91e454c82d@linux-foundation.org> In-Reply-To: <20260813075025.1406585-1-xueyuan.chen21@gmail.com> References: <20260813075025.1406585-1-xueyuan.chen21@gmail.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: d3rt6r1cyth3tudsarhaifmmush851ga X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: ADA2E160006 X-HE-Tag: 1786653844-212170 X-HE-Meta: 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 Jq0fQGHb Dg98/YmB9DjD1Njy1/ZOHejL8JG6Re59eVBXoV+qDsM0HWFsmss/ypNbaQXSLGfX9c3D/bpZlYHTGS0uS8T2i3f02naBm37WUQY3M7/Hz4J7isJzr6JYQ/ULg4Gnguf+a45ii2c55X95jia96JfAYf+ws+MW5kifipG4b8b9tXVCk9aczKlEUrmNP8fqdmHHfNSBHv3VmVqb/7M3h6BCm6T1teexUXmTzznhAJpgBeM7IlNWDHAaKS/LziCjraKld4uDRcWhIi9HXGUxzIBlkFHNm3jDkhJtmbMfPEw2OAguxwloSdZzrjivJ1Qkms8Pz81LqL3AnCpTWwTUj8jtD7vcchwzCSVP9WOOM Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 13 Aug 2026 15:50:21 +0800 Xueyuan Chen wrote: > This is v6 of Barry's original RFC patch, "mm: Avoiding split large > folios if swap has no space": Thanks. It looks like a nice patchset and it comes well-reviewed. However it's super late in the cycle so I'd prefer to defer this until after 7.3-rc1. The changelogs aren't very clear on the overall benefit to our users (please address this), but I'm thinking "minor". If I'm wrong then lets consider -stable backports and suitable Fixes: targets.