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From: Roman Gushchin To: Shakeel Butt Cc: Andrew Morton , Johannes Weiner , Michal Hocko , Muchun Song , Hugh Dickins , Yosry Ahmed , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org, Meta kernel team Subject: Re: [PATCH v1 5/6] memcg-v1: no need for memcg locking for MGLRU Message-ID: References: <20241025012304.2473312-1-shakeel.butt@linux.dev> <20241025012304.2473312-6-shakeel.butt@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241025012304.2473312-6-shakeel.butt@linux.dev> X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 8BFE740003 X-Stat-Signature: 5mm9jgqxat918ug7on3qy53hg73y7jc1 X-HE-Tag: 1729878080-8673 X-HE-Meta: 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 0cngC7Ch NErGOZaHnTtqneSJe2bpCsF/dFxZtfPuVHyoz/RwI0LludRSJNpK31dIXHiTpBL7cT5e823FlZbz+QOFerXz1Ktey7LWgoz2PkDb2xEUYRLMTltT0Lqfmd3bVIhO14JlZr1FPTDMpEt4lJ0aFtLDKow5tYNlwAIbBpYHGlJ//SGhKo1TRLN3prG08CA== 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 Thu, Oct 24, 2024 at 06:23:02PM -0700, Shakeel Butt wrote: > While updating the generation of the folios, MGLRU requires that the > folio's memcg association remains stable. With the charge migration > deprecated, there is no need for MGLRU to acquire locks to keep the > folio and memcg association stable. > > Signed-off-by: Shakeel Butt Reviewed-by: Roman Gushchin