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Sat, 16 Aug 2025 20:27:08 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-618af89e28bsm4367961a12.0.2025.08.16.20.27.06 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sat, 16 Aug 2025 20:27:07 -0700 (PDT) From: Wei Yang To: akpm@linux-foundation.org, david@redhat.com, lorenzo.stoakes@oracle.com, riel@surriel.com, Liam.Howlett@oracle.com, vbabka@suse.cz, harry.yoo@oracle.com Cc: linux-mm@kvack.org, Wei Yang Subject: [Patch v2 0/2] mm/rmap: small cleanup for __folio_remove_rmap() Date: Sun, 17 Aug 2025 03:26:45 +0000 Message-Id: <20250817032647.29147-1-richard.weiyang@gmail.com> X-Mailer: git-send-email 2.11.0 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 250A81C0005 X-Stat-Signature: buwjuim4tncezkzgk7mmzdgfjf6ozajt X-Rspam-User: X-HE-Tag: 1755401229-557482 X-HE-Meta: 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 1dZroWZC 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 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: During code reading, I found some small places where we can improve based on the knowledge we already have. Patch 1 remove a mask of on nr, since we are in an if branch conditional which implies the upper bits are already clear. Patch 2 use folio_large_nr_pages() to get the nr since we know this is a large folio. v2: * remove patch 2 * adjust patch 1 changelog * adjust cover letter description Wei Yang (2): mm/rmap: not necessary to mask off FOLIO_PAGES_MAPPED mm/rmap: use folio_large_nr_pages() when we are sure it is a large folio mm/rmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- 2.34.1