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[109.81.92.28]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43d1e4e52a0sm62165656f8f.30.2026.04.09.01.22.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2026 01:22:18 -0700 (PDT) Date: Thu, 9 Apr 2026 10:22:17 +0200 From: Michal Hocko To: Kefeng Wang Cc: Andrew Morton , David Hildenbrand , Christian Brauner , Alexander Viro , "Matthew Wilcox (Oracle)" , Jan Kara , "Liam R. Howlett" , Lorenzo Stoakes , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH RFC] fs: drop_caches: introduce per-node drop_caches interface Message-ID: References: <20260409063503.3475420-1-wangkefeng.wang@huawei.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu 09-04-26 16:08:37, Kefeng Wang wrote: [...] > To use the reclaim interface, there are two differences, > > 1) we need to input the reclaim numbers and swappiness, this is not a big > problem > 2) for reclaim, it supports swappiness=max to only reclaim anonymous pages, > but cannot only reclaim file pages, Why is 2) a real constrain? -- Michal Hocko SUSE Labs