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AJvYcCVK9pzL9PO2SMj1STAO1RUSvldTKKdgjrhGrf4bt/726jh9RSR8/caqGsgKR6DNFpUEmrDgB+853UBiXdaUZWDHDh8= X-Gm-Message-State: AOJu0Ywk5hUJuRmEWpg2QytVDq1ojXwpdPPcKGkdKF8mlqb/LY2mrWy6 t4dUXnNM9o2WIzBu5/1fux7glIQadTHLkWDRbRni0R9+Z9TzeRM+hMtn8OJM4a01GEcZiH/atwo fbI03nFYDDS8i+Lyk6BKXHfustgvjpEh1Up+qgw== X-Google-Smtp-Source: AGHT+IFO5Z7BsmHAefImdCXlOf9v/A1DymY9rKzrFG6F8X6fIh9MpYHyGC/yHJX92pP0BH/FzDecR0AIIxui9aAjnNM= X-Received: by 2002:ac8:570f:0:b0:42c:78fd:e4fa with SMTP id 15-20020ac8570f000000b0042c78fde4famr1316065qtw.32.1708551075946; Wed, 21 Feb 2024 13:31:15 -0800 (PST) MIME-Version: 1.0 References: <20240221194052.927623-1-surenb@google.com> <20240221194052.927623-8-surenb@google.com> In-Reply-To: <20240221194052.927623-8-surenb@google.com> From: Pasha Tatashin Date: Wed, 21 Feb 2024 16:30:39 -0500 Message-ID: Subject: Re: [PATCH v4 07/36] mm: introduce slabobj_ext to support slab object extensions To: Suren Baghdasaryan Cc: akpm@linux-foundation.org, kent.overstreet@linux.dev, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, roman.gushchin@linux.dev, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, penguin-kernel@i-love.sakura.ne.jp, corbet@lwn.net, void@manifault.com, peterz@infradead.org, juri.lelli@redhat.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, peterx@redhat.com, david@redhat.com, axboe@kernel.dk, mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, dennis@kernel.org, tj@kernel.org, muchun.song@linux.dev, rppt@kernel.org, paulmck@kernel.org, yosryahmed@google.com, yuzhao@google.com, dhowells@redhat.com, hughd@google.com, andreyknvl@gmail.com, keescook@chromium.org, ndesaulniers@google.com, vvvvvv@google.com, gregkh@linuxfoundation.org, ebiggers@google.com, ytcoode@gmail.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, vschneid@redhat.com, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, 42.hyeyoo@gmail.com, glider@google.com, elver@google.com, dvyukov@google.com, shakeelb@google.com, songmuchun@bytedance.com, jbaron@akamai.com, rientjes@google.com, minchan@google.com, kaleshsingh@google.com, kernel-team@android.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: E2D06A000C X-Stat-Signature: cdu5zjfkpjkfifhq7ftpcf81fynfzhji X-HE-Tag: 1708551076-518680 X-HE-Meta: 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 sN1hnCSz pKxau2GpfaDGxHAjHUwz2n9YbRTCfJrUGF4VBLFQ69wuqJhn2DmVlru7k6U3ojijgH4CWgFBQkU0IdXgbeWOHpd/TdyR3zJx9L/3VwzDcLIyWtVaxcVgkIaNfML1OnDS0EmTUGvp2fRfZgVusi9J33Dvo16jnKm+RqfwYknK7dCfqJy4= 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: List-Subscribe: List-Unsubscribe: On Wed, Feb 21, 2024 at 2:41=E2=80=AFPM Suren Baghdasaryan wrote: > > Currently slab pages can store only vectors of obj_cgroup pointers in > page->memcg_data. Introduce slabobj_ext structure to allow more data > to be stored for each slab object. Wrap obj_cgroup into slabobj_ext > to support current functionality while allowing to extend slabobj_ext > in the future. > > Signed-off-by: Suren Baghdasaryan Reviewed-by: Pasha Tatashin