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[100.17.19.56]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8d3edb58da6sm1104864185a.8.2026.04.07.07.31.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Apr 2026 07:31:53 -0700 (PDT) Date: Tue, 7 Apr 2026 10:31:52 -0400 From: Eric Chanudet To: Johannes Weiner Cc: Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , Maarten Lankhorst , Maxime Ripard , Natalie Vock , Tejun Heo , Michal =?utf-8?Q?Koutn=C3=BD?= , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, "T.J. Mercier" , Christian =?utf-8?B?S8O2bmln?= , Maxime Ripard , Albert Esteve , Dave Airlie Subject: Re: [PATCH RFC 1/2] mm/memcontrol: add page-level charge/uncharge functions Message-ID: References: <20260403-cgroup-dmem-memcg-double-charge-v1-0-c371d155de2a@redhat.com> <20260403-cgroup-dmem-memcg-double-charge-v1-1-c371d155de2a@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@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 Fri, Apr 03, 2026 at 01:15:03PM -0400, Johannes Weiner wrote: > On Fri, Apr 03, 2026 at 10:08:35AM -0400, Eric Chanudet wrote: > > Expose functions to charge/uncharge memcg with a number of pages instead > > of a folio. > > > > Signed-off-by: Eric Chanudet > > No naked number accounting, please. The reason existing charge paths > require you to pass an object is because there are other memory > attributes we need to track (such as NUMA node location). > Understood, thank you. I'll change to using a mem_cgroup_dmem_{,un}charge functions and a memory.stat entry as well, similar to what is done for mem_cgroup_sk_{,un}charge. -- Eric Chanudet