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Tue, 14 Oct 2025 06:49:27 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-426ce57d3b9sm24092534f8f.11.2025.10.14.06.49.26 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 14 Oct 2025 06:49:26 -0700 (PDT) From: Wei Yang To: akpm@linux-foundation.org, david@redhat.com, lorenzo.stoakes@oracle.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev Cc: linux-mm@kvack.org, Wei Yang Subject: [PATCH 5/5] mm/huge_memory: Remove redundant split_order != new_order check in uniform_split Date: Tue, 14 Oct 2025 13:46:06 +0000 Message-Id: <20251014134606.22543-6-richard.weiyang@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20251014134606.22543-1-richard.weiyang@gmail.com> References: <20251014134606.22543-1-richard.weiyang@gmail.com> X-Rspam-User: X-Rspamd-Queue-Id: AAADA140005 X-Rspamd-Server: rspam03 X-Stat-Signature: auadgizjtwurpm3ji1mdcqa9icb56w4c X-HE-Tag: 1760449768-68920 X-HE-Meta: U2FsdGVkX1+PCOFt9J1EM2hombEm1VS0V62N1fCVRHqqRuNQO/FKStWtq64D5/cXFw21Annsj0N575DQY81C6oRmtgsxY9OyjMz7iKmKnfjc618o3NSyra9A+W/+D37ZzA7OWgEgAOvQcOvBgI7PHL7AuNuWp2uY4o2qzpFtfFDt2eBi/gxBH9pgp+wTZdhRn6bsEnqWQDGdXq54IOVbaPBtB+8tJIMx2MXO7mWoI714FZ+785x6MtjdtmQ97DEEX7r+ssPQwNjP7wovxheHklNpc7lPmoRSulHbhzht6kFB2cCP7ihUWz9YS+TW1u2DnZ2UjYgQ1O6OfG5pKbnRSIlh7SaYgpjVha/wo23LQdz5IFqcSLENuYUMm82CINcS8nZQxWC1DkT4feP0eUIvL8oMuQqMosonZcndtiU2ofQx1DjjHV5BkAAnNnTf3aIhlon/sQRu/PY2QiLjNf3Imn8XH0TKSgYrTtWcwcWTGSIokKxN2SnR0ERC6vI66LIN4NZZLLBR8F+lyJ+UR53FlxQYc2VkgdkCZm8SZXxbv2BPP44rhJC5+VuDmyZKb26o1sLQZOw7HdRtmG86d4/X6Du/XFaTugKeLEtK3QA7dClrjS+vb0FpJosUPPoPPVkwk1CSUvb7LvgZ6XMfmcP032ONJ3BhLGGfDfsBjhzzhrcyO6dnCfkZz9jl08hiCCgmt2sMq9fnqOUxyzYethYr9qlhTrxJFgvhyBBOMTzaBD+l7/M3g9ww7kN6kdPFyITc56zjyQ5vs9ydTet3Bx3AZkGc1lx5wS3c2KrQi0Etqcw9Z0aZVFDFQlJ2mfZqLsTtSxWSFqNbTUDc2BTJE1rpFQbWQfHGUDzMY6yauTNPaDFAmqjUJW+qUYybfim4hFghTOOMQAlfzuGJIPSkOR1onP3BsdJNa3UFw5PcU6zorSUnYfy+/Osxl4J6rEiWIJ+2+KVpz2fFhNySF9AuThe 2H6kiWG+ 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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: The uniform splitting logic is designed so that the @split_order variable starts at the target @new_order and subsequently decreases with each iteration. Given that both @split_order and @new_order are integers and the splitting process only ever targets the @new_order for a uniform split, the condition where split_order != new_order will not logically occur within the expected execution path. Removes the check for this non-existent case, simplifying the code. Signed-off-by: Wei Yang Cc: Zi Yan --- mm/huge_memory.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 63380b185df1..a1f0da9486eb 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -3545,8 +3545,6 @@ static int __split_unmapped_folio(struct folio *folio, int new_order, /* order-1 anonymous folio is not supported */ if (is_anon && split_order == 1) continue; - if (uniform_split && split_order != new_order) - continue; if (mapping) { /* -- 2.34.1