From nobody Sun Apr 5 19:50:57 2026 Received: from bg1.exmail.qq.com (bg1.exmail.qq.com [114.132.58.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BFBBC239E7F for ; Tue, 24 Feb 2026 02:30:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.132.58.6 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771900206; cv=none; b=JXum+TWpJU72D60fSx9oyDIYDE6fVAuxOaLlqo5APE9ZdHa1RR95GrZRvH5IRm6/SUMz5g+PxTEFDi1QyEn15eCcl4ZtaglfHm6woD2L26s4BDnxHFW7V/GUL62ldAQteEPliKBTrVyc+1FIPjjH58F1vDVaeYMSaNlftnT3O7g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771900206; c=relaxed/simple; bh=8XWgutRX1dL+2hZFglwuWaE24JChaHEmv9ddrNZ9mWk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=vA1wmXFfQA5yYCbAtqgCRzrdMwTrrWri8CE0dv5/zNAkGrdvE+gxvOdh1xqw/nGwkO7wlLOs1sAuodqjbx9ALBIK0KFxUM1vFEZ0U/5/bi9DX7o/UcpqecpfJiZNs0fVmxd+lrabVwJIcri6N1OQ4kUniafxYum5wn9YNttU2Ic= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=smail.nju.edu.cn; spf=pass smtp.mailfrom=smail.nju.edu.cn; dkim=pass (1024-bit key) header.d=smail.nju.edu.cn header.i=@smail.nju.edu.cn header.b=euvVEo6V; arc=none smtp.client-ip=114.132.58.6 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=smail.nju.edu.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=smail.nju.edu.cn Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=smail.nju.edu.cn header.i=@smail.nju.edu.cn header.b="euvVEo6V" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=smail.nju.edu.cn; s=iohv2404; t=1771900127; bh=L6gGCDURJbi9D+++EtYTCKD6x84H1m2dP9Vpcs7fNgo=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=euvVEo6Vub6me+dYcVKKhCeL5vzqHSGr1h4F52bMnTCL57DPE2PUjv50nQ0OEaR5z 7SwbTa36vxPOUcm+J058CVFOCnz606S7E5hXWvwrUF2xRFcmPAMQJBvl5rED/9NDGM g/+duqa7w8zvilJ0jhwg47YBdwfDznGWH7dq/BJM= X-QQ-mid: zesmtpgz3t1771900124t4a5b21de X-QQ-Originating-IP: vaxd3IqHPEL5PZl/m1xBngUqWjiqMAJoXfpZt6DLGhU= Received: from localhost.localdomain ( [116.172.93.199]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 24 Feb 2026 10:28:42 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 12279923767468614604 EX-QQ-RecipientCnt: 11 From: kexinsun To: muchun.song@linux.dev Cc: osalvador@suse.de, david@kernel.org, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, julia.lawall@inria.fr, xutong.ma@inria.fr, yunbolyu@smu.edu.sg, ratnadiraw@smu.edu.sg, kexinsun@smail.nju.edu.cn Subject: [PATCH] mm/hugetlb_vmemmap: update outdated comment Date: Tue, 24 Feb 2026 10:28:40 +0800 Message-Id: <20260224022840.1936-1-kexinsun@smail.nju.edu.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpgz:smail.nju.edu.cn:qybglogicsvrgz:qybglogicsvrgz5b-0 X-QQ-XMAILINFO: NdsFfOnJssvzppV8bQ+5cUt8isiDKo0d/MMc88i8/nBKj7MOVeHuOaOK Kh4fgBuHGv8WySQJyUMT52wvov+NPesIIp6uN+uAo4FA28MWjq+XwzZyzo6F0u9JE5XBrnp tM9or3kr2kDLY/TtQuKnaYFUUifDCLXPNNAmwIEV9dBbI3XzZFHFbdiknGFNuU8DnzG/cKC mGAC0SNA0JcqwMZMSTNMzvkzuNoOGwEpXp0wL6ftbObKsWp9f1UtHw+z1TcVOWpbW8EOZuK EuZYwPwDa4Z+EcaYfRMxnbKhoDMI+2FK28pVt9P619KhTpZsSPtfSokXIxLX82MyGLCW2mU x9IhMmInLWzLBxZ/veCN3X+CsuoRyCsbPAiqpV9CodCBfjKUAg/hv604U96SmXc0oimtD4h /dRDokslIqWrXlT1T8hTkm9JncrCYgfSCPaHk0Q9QEmo6t40bCPOLAASvYTDqrtQV+wy4Gz 8Oo4fKyPLYUFR+bdx9X2Jfc6mI8syzIthICwuG62n5SAqsDHkYQ/Yc+3w9+3hS9Via1cTq9 +Ky6MG7G23aomGUQVLKprwD+Bn4a2smVOrpNvhcCr54eRZ/BRmK3bTsffCAiug2+O9ilLpn PpzEFwrBi127J1jtcEORj91nr99hn3OME5rsqGfd7ITbY9P5eyKRkvkvV8sb07BF6kUQrBM bRlHkPsWnsJHVzPOFgCgXV8XWFF5a6+BoScbFBqC8FbvCGFgeL3BA4EI5NgbdR3Xkd8s93X DweHeAVVbEpguJcq+I1e0fvssrLYMoZAdZcDoWEylZMQrSYEhrF0xI9xd7Mq70GZiut0zkS LraYlQrSUmvMb1E1JMmhPqq7Kwhlw6a9j8LdmTc5JroxkiSc0wpDQRveqBT1fvYdBXL7lcY z/RfZZ5MyOTHaH6wKzeIju9yXUCtMeEVKhl0o42SUEUNgB+dZDaVILz4/tjfqz/cz5H8xho O1LQ9fKrwxh9bD3rGic20qQuiRARvtW5rsHw/ieBVd5Dg8KEDMEj6KibZMh33tYwyzJtX/q G3Q+fPL4p4g5TCZDal5byA3Fb/d7aL0F57qMEvbXWoxllPHbt38M459Mvl9AEYMv+xQslio 06FDbNvQAYC X-QQ-XMRINFO: OD9hHCdaPRBwH5bRRRw8tsiH4UAatJqXfg== X-QQ-RECHKSPAM: 0 Content-Type: text/plain; charset="utf-8" The function vmemmap_pte_range() was refactored into vmemmap_pte_entry() by commit fb93ed63345f ("mm: hugetlb_vmemmap: use walk_page_range_novma() to simplify the code"). Both functions share the key behavior that the reuse page is identified first before remapping begins. Update the comment accordingly. Signed-off-by: kexinsun Reviewed-by: Muchun Song --- mm/hugetlb_vmemmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c index a9280259e12a..5156e4038b5f 100644 --- a/mm/hugetlb_vmemmap.c +++ b/mm/hugetlb_vmemmap.c @@ -350,7 +350,7 @@ static int vmemmap_remap_free(unsigned long start, unsi= gned long end, /* * In order to make remapping routine most efficient for the huge pages, * the routine of vmemmap page table walking has the following rules - * (see more details from the vmemmap_pte_range()): + * (see more details from the vmemmap_pte_entry()): * * - The range [@start, @end) and the range [@reuse, @reuse + PAGE_SIZE) * should be continuous. --=20 2.25.1