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[2603:7000:c01:2716:3012:16a2:6bc2:2937]) by smtp.gmail.com with ESMTPSA id q16-20020a05620a039000b00770f2a690a8sm421173qkm.53.2023.10.03.05.47.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Oct 2023 05:47:29 -0700 (PDT) Date: Tue, 3 Oct 2023 08:47:28 -0400 From: Johannes Weiner To: Nhat Pham Cc: akpm@linux-foundation.org, riel@surriel.com, mhocko@kernel.org, roman.gushchin@linux.dev, shakeelb@google.com, muchun.song@linux.dev, tj@kernel.org, lizefan.x@bytedance.com, shuah@kernel.org, mike.kravetz@oracle.com, yosryahmed@google.com, fvdl@google.com, linux-mm@kvack.org, kernel-team@meta.com, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org Subject: Re: [PATCH v3 1/3] memcontrol: add helpers for hugetlb memcg accounting Message-ID: <20231003124728.GA17012@cmpxchg.org> References: <20231003001828.2554080-1-nphamcs@gmail.com> <20231003001828.2554080-2-nphamcs@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231003001828.2554080-2-nphamcs@gmail.com> X-Rspamd-Queue-Id: 1E44BC001F X-Rspam-User: X-Stat-Signature: cqgf95asetbhd3m6kyp3ixxd1asm8nix X-Rspamd-Server: rspam03 X-HE-Tag: 1696337250-882038 X-HE-Meta: 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 7FBNyWb8 XjfQyM+ZqFNvkcV1UaTKv5oaPSRON5VRhhLRD4VDLiqHBKGj0uFxmvYPiEPWpzLg4HLtArO55JV8KUCRmva3Mi6I9HtKxPPEOjQaGHuxXORJIDlN/jkdqUkA8MdGdsWd+DqOv9krd96SGoKEQNEvYxshge6/tVMCJwJeaEXFH8zKPqGJE5ohyYqoip7VL752sgUZF04z/aEPHMwx87Xqz57VqK5zZSByyuZtvfX09Gtacf1TiOb8hZow55vFgLDE3ZvvMQaAMGd0x6fRSnbLhX0G/2PnRyELE+UPoksS0VKVW3EUxnfjdBWAua9smfEqhWXXGZY+udmLNMzvVPVNyUzAOs9x/9z4wUrea43PV+vjLQQkooh+hzy+7Xi9u98J9iR+vY6dVt5IpRRQT6R3ODuAE85+1bx2YBlD2UmW+JbeogPiuEDIB/99C272iUnLDyMSztMEGk6ATGdkAm0Th1bGbSS5TYm7A7tMb X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Oct 02, 2023 at 05:18:26PM -0700, Nhat Pham wrote: > This patch exposes charge committing and cancelling as parts of the > memory controller interface. These functionalities are useful when the > try_charge() and commit_charge() stages have to be separated by other > actions in between (which can fail). One such example is the new hugetlb > accounting behavior in the following patch. > > The patch also adds a helper function to obtain a reference to the > current task's memcg. > > Signed-off-by: Nhat Pham Acked-by: Johannes Weiner