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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 v3 3/3] mm: page_counters: initialize usage using ATOMIC_LONG_INIT() macro Message-ID: References: <20240726203110.1577216-1-roman.gushchin@linux.dev> <20240726203110.1577216-4-roman.gushchin@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240726203110.1577216-4-roman.gushchin@linux.dev> X-Migadu-Flow: FLOW_OUT X-Stat-Signature: u1mi9zhte647qpr4orrt644ncnicdgbf X-Rspamd-Queue-Id: 35D491A000C X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1722029857-706092 X-HE-Meta: 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 sK8uLpOn m/0gH0/JUMEOvfKc6l+M0TQo96LRh0p9XlnO48huNf+BWM8SnT28YNC6q5G7IDGmRlw6dt6Ncx3p9aDC8bgWYb/cnHa48oKedo3dwP2hXYfbkVEHH5AcRSOJmb/HNMUyR/0BxxSI/HiE3Qrba1ZNdwClXhPBaGLCff69o 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 Fri, Jul 26, 2024 at 08:31:10PM GMT, Roman Gushchin wrote: > When a page_counter structure is initialized, there is no need to > use an atomic set operation to initialize the usage counter because > at this point the structure is not visible to anybody else. > ATOMIC_LONG_INIT() is what should be used in such cases. > > Signed-off-by: Roman Gushchin Acked-by: Shakeel Butt