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[109.81.92.28]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43d1e1fe0b0sm68655798f8f.0.2026.04.09.05.02.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2026 05:02:52 -0700 (PDT) Date: Thu, 9 Apr 2026 14:02:51 +0200 From: Michal Hocko To: "David Hildenbrand (Arm)" Cc: "Salunke, Hrushikesh" , Andrew Morton , "Vlastimil Babka (SUSE)" , surenb@google.com, jackmanb@google.com, hannes@cmpxchg.org, ziy@nvidia.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, rkodsara@amd.com, bharata@amd.com, ankur.a.arora@oracle.com, shivankg@amd.com Subject: Re: [PATCH] mm/page_alloc: use batch page clearing in kernel_init_pages() Message-ID: References: <20260408092441.435133-1-hsalunke@amd.com> <22b6ff3c-9d41-4eb0-9beb-cb92f3ada89f@kernel.org> <4e8c218b-ac5e-4674-9e1e-acf750f0a5c8@amd.com> <20260408083229.45d1a083f17484d3b2678855@linux-foundation.org> <4dd26573-85cc-446a-b2b7-2aeab8aa2417@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4dd26573-85cc-446a-b2b7-2aeab8aa2417@kernel.org> X-Stat-Signature: 71k476r4pdzppcsdudgny3665i5mfwcr X-Rspamd-Queue-Id: 4B61020005 X-Rspam-User: X-Rspamd-Server: rspam03 X-HE-Tag: 1775736176-725953 X-HE-Meta: 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 3hOARLTf lUbd20VgSrSRQMRtS83FmAfGmjIod+CA8chIUyZ7pW/oCfErdEYj0t0fAvGOXQKz5iPd5fU0VzhVMNq74rnJNmakYBSPUhuWvjuTh3i0gTA8LK58= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu 09-04-26 11:00:33, David Hildenbrand wrote: [...] > I mean, it would already happen today, because there is no > cond_resched(). So nothing to worry about I guess. Please also note that with moving away from PREEMPT_NONE/VOLUNTARY there is no future for cond_resched anymore. We should be starting looking into reducing[*] them rather than adding more. --- [*] not all architectures are PREEMPT_LAZY compatible as of now so dropping cond_resched will need to be done carefully. -- Michal Hocko SUSE Labs