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From: Shakeel Butt To: Roman Gushchin Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Johannes Weiner , Michal Hocko , Muchun Song Subject: Re: [PATCH 2/2] mm: memcg: add cache line padding to mem_cgroup_per_node Message-ID: References: <20240701185932.704807-1-roman.gushchin@linux.dev> <20240701185932.704807-2-roman.gushchin@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240701185932.704807-2-roman.gushchin@linux.dev> X-Migadu-Flow: FLOW_OUT X-Stat-Signature: 63qk4sh1ur5u89c4kxujsas3g8ijs5re X-Rspamd-Queue-Id: 72D4420022 X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1719861441-921314 X-HE-Meta: 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 t/H5Ck62 pHNi9d/PNdVTs+OEH8QwcTB6fb+khLqNnZf9j29Foy2xE4eSllIuEJOobBpuTkMjEZb7bSbMsZFz+ccMuWrEB4kQDKpEl1eHk/Lw67OwKHgG2a5ATdT2nf3hw+xa3Zy6caiIXVHoMnyTeC46FLimS0Gl16VFC7qaSY/EU 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 Mon, Jul 01, 2024 at 06:59:32PM GMT, Roman Gushchin wrote: > Memcg v1-specific fields serve a buffer function between read-mostly > and update often parts of the mem_cgroup_per_node structure. > If CONFIG_MEMCG_V1 is not set and these fields are not present, > an explicit cacheline padding is needed. > > Suggested-by: Shakeel Butt > Signed-off-by: Roman Gushchin Acked-by: Shakeel Butt