From patchwork Fri Oct 18 17:41:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liam R. Howlett" X-Patchwork-Id: 13842119 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E9DFD3DEA3 for ; Fri, 18 Oct 2024 17:41:47 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C5FAE6B00AD; Fri, 18 Oct 2024 13:41:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B6E9B6B00AE; Fri, 18 Oct 2024 13:41:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 925BC6B00AF; Fri, 18 Oct 2024 13:41:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 67EC16B00AD for ; Fri, 18 Oct 2024 13:41:46 -0400 (EDT) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 9704EA0708 for ; Fri, 18 Oct 2024 17:41:23 +0000 (UTC) X-FDA: 82687440276.10.BF5D11D Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) by imf03.hostedemail.com (Postfix) with ESMTP id 4F71620012 for ; Fri, 18 Oct 2024 17:41:37 +0000 (UTC) Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-11-20 header.b=JhTZIB9n; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=C27vMjNK; spf=pass (imf03.hostedemail.com: domain of liam.howlett@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=liam.howlett@oracle.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=reject) header.from=oracle.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1729273254; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=4WsOX6LvlT+1onW8mlsKAymogeel1ZnaC3LAXJT3nVM=; b=Z7yKHyiOMGjmvSY+/ShEGAJeTXgGaKbgIkJpVE7p7zvxzmXhvGB7FV988eTvXJPQoZwVdp woxwAWbP08ijKxBsoeKRqr93xL/uV+zcaY9wzvQgC3DIGMlAbCpcWTL/2Q/h9kxq6Rgvlg vgGWh+7pOcwPzk01n7FtPkGEc2QtWJ4= ARC-Authentication-Results: i=2; imf03.hostedemail.com; dkim=pass header.d=oracle.com header.s=corp-2023-11-20 header.b=JhTZIB9n; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=C27vMjNK; spf=pass (imf03.hostedemail.com: domain of liam.howlett@oracle.com designates 205.220.177.32 as permitted sender) smtp.mailfrom=liam.howlett@oracle.com; arc=pass ("microsoft.com:s=arcselector10001:i=1"); dmarc=pass (policy=reject) header.from=oracle.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1729273254; a=rsa-sha256; cv=pass; b=rwqMfg6D2/RHIqhj+Hx/Orxf3fnXrQptH/3KrhHfG6ioMZBBJ/fkNC+IMUTkzuUID+8CJr tWsemL2r8GdWcDV57UsnpLKWD4sKN1LadX/HdysXdRuOP9uEOLrDbpKl8MY9Ty/P/26nQg /0aX2qnPO2ybQa5gicnbw3dOO9WrolM= Received: from pps.filterd (m0246631.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49IEBhJA022582; Fri, 18 Oct 2024 17:41:29 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2023-11-20; bh=4WsOX6LvlT+1onW8mlsKAymogeel1ZnaC3LAXJT3nVM=; b= JhTZIB9nXujtO8uTUP6gwzmitwOM3H5j8Pasrp8Aa0WpRP2QL4HsVfmO2aGcGoja GhHj4bIZ4F3WrSpPnvojNsV20SmN3iPHr2hupR88Wn/iXK6lA14yqC6Mq01SMjgA fEWE1nrDDF0OTRK7weL0i4Uzmo0pgfEa+6qV5BOHeO9SwM3F2ekuZyYYwsuDq1Oh FsdXLN6sIZxRhze3ZK+LizeBvO0ajze2PsFtSqjwXbzPI/OFdfnLWxcezmrMlqGz I/VrKFQeHPtCbaY4DpPsiU2eZhKBRBwUfqd5yilQoImgtqbXKa4+MybXsUsDh3W4 Pqm+hjrwyI9xNbW0w97WCA== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 427fw2shja-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 18 Oct 2024 17:41:29 +0000 (GMT) Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 49IHZ8V8026241; Fri, 18 Oct 2024 17:41:28 GMT Received: from nam10-dm6-obe.outbound.protection.outlook.com (mail-dm6nam10lp2048.outbound.protection.outlook.com [104.47.58.48]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 427fjbvtet-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 18 Oct 2024 17:41:28 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=tT2XMH18xChl84vpTDzsxHP8Z82ziJFsZLiBTcJuB8DiqpH58igYTujVHsZguuOK8KtZvJbO8SfGLu7b40v/LybrOU9omxQMo4ETtAnMizSy/wRMuj6AHTJFG3YfyGD0067fW1FFMkvR0S0YaNBSvWKi891woPrD6r4tDieXJiMNz7Q23Nmm99NQnWUcBJEoGuFola9GX67DF5FjYp40UOGtlRcsXr+gky/kx/O6gFbcA56r+lggLODMxn72QzlwDNijRyAvqjqXsnLgEu9iggIMlHNdmrPNpLznznlbQ7755jUlqor8qjegzel3sFuoFxC7E3GUpopzcgXe/yPxIQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=4WsOX6LvlT+1onW8mlsKAymogeel1ZnaC3LAXJT3nVM=; b=v45nvn1VKoLB8lFreltDgqGeoQou+q7H+G8YV2wfDgbnqCjWOOFjXkwODa/ih3RTfa33Sxh3+nd1CovaCjGXBB0VjyjGfrdymLSZcpkMC0EcpGPzo/bN7PBgxa1eNIS44+NPrxK+Mh9kNlTljuZFIE3U93kn1/KqVUCmjWvJT77eqKXVHYe+PcqYTjpblT8k7Cj0VbG9nAN6opZTVkDDpxUpJIJUvtv2mAoKoEcmi+qQmZNS0OubxXT0I4jZA+f/5zedqxQt3xKTB4hFe4+6v/Vs8TqF9S92cVNREddhY2dNCRqbJrZkuXUgmjTu6WczjyR3+Ws/FJA/xsMqqz7hFA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=4WsOX6LvlT+1onW8mlsKAymogeel1ZnaC3LAXJT3nVM=; b=C27vMjNKajzKHbB7OJaGJn1RlUKOtbLfAklmL/UxiUA35kw02TxN9cogheYPsmKujOwjqZJFyBXvvVEHY2JaWAMDSaQ5EvD4BLvlIcPRG8Z1EpvQsq5a6M88S952Imgr4vvTn6OGa7XCnP6rmQDXJpRgOhYib0N0jeOzr1X7l1c= Received: from DS0PR10MB7933.namprd10.prod.outlook.com (2603:10b6:8:1b8::15) by PH0PR10MB7078.namprd10.prod.outlook.com (2603:10b6:510:288::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8069.18; Fri, 18 Oct 2024 17:41:21 +0000 Received: from DS0PR10MB7933.namprd10.prod.outlook.com ([fe80::2561:85b0:ae8f:9490]) by DS0PR10MB7933.namprd10.prod.outlook.com ([fe80::2561:85b0:ae8f:9490%7]) with mapi id 15.20.8069.016; Fri, 18 Oct 2024 17:41:21 +0000 From: "Liam R. Howlett" To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Lorenzo Stoakes , Jann Horn , David Hildenbrand , Qi Zheng , Kefeng Wang , Jeff Xu , Pedro Falcato , "Liam R. Howlett" Subject: [PATCH v2 2/2] mm/mremap: Remove goto from mremap_to() Date: Fri, 18 Oct 2024 13:41:14 -0400 Message-ID: <20241018174114.2871880-3-Liam.Howlett@oracle.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241018174114.2871880-1-Liam.Howlett@oracle.com> References: <20241018174114.2871880-1-Liam.Howlett@oracle.com> X-ClientProxiedBy: YT4PR01CA0238.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:eb::28) To DS0PR10MB7933.namprd10.prod.outlook.com (2603:10b6:8:1b8::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR10MB7933:EE_|PH0PR10MB7078:EE_ X-MS-Office365-Filtering-Correlation-Id: e01f5eeb-2de8-419f-03c2-08dcef9c143a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|366016; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DS0PR10MB7933.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(366016);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: e01f5eeb-2de8-419f-03c2-08dcef9c143a X-MS-Exchange-CrossTenant-AuthSource: DS0PR10MB7933.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Oct 2024 17:41:21.4027 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: MYfKx77bf2HOeAhxDlt2Ba9cmF1Ccl4EfbKi15gyZscHbGZv69ufSaMHF5io9yG7HdumjhfFbxQ+BE3F5xreew== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR10MB7078 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-18_13,2024-10-17_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 malwarescore=0 adultscore=0 bulkscore=0 spamscore=0 mlxlogscore=999 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2409260000 definitions=main-2410180113 X-Proofpoint-GUID: vyAgnZ8z3eYk5SNbvX749wLgTGZFPtuY X-Proofpoint-ORIG-GUID: vyAgnZ8z3eYk5SNbvX749wLgTGZFPtuY X-Rspam-User: X-Stat-Signature: ysaxyaurzwa15kkyaqdz6ebbb5kn1p6b X-Rspamd-Queue-Id: 4F71620012 X-Rspamd-Server: rspam11 X-HE-Tag: 1729273297-197289 X-HE-Meta: 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 4U817fra 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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: From: "Liam R. Howlett" mremap_to() has a goto label at the end that doesn't unwind anything. Removing the label makes the code cleaner. This commit also adds documentation on the function. Signed-off-by: Liam R. Howlett --- mm/mremap.c | 46 +++++++++++++++++++++++++++------------------- 1 file changed, 27 insertions(+), 19 deletions(-) diff --git a/mm/mremap.c b/mm/mremap.c index e781ec4573ca..4c79ab92eb8f 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -887,6 +887,20 @@ static int resize_is_valid(struct vm_area_struct *vma, unsigned long addr, return 0; } +/* + * mremap_to() - remap a vma to a new location + * @addr: The old address + * @old_len: The old size + * @new_addr: The target address + * @new_len: The new size + * @locked: If the returned vma is locked (VM_LOCKED) + * @flags: the mremap flags + * @uf: The mremap userfaultfd context + * @uf_unmap_early: The userfaultfd unmap early context + * @uf_unmap: The userfaultfd unmap context + * + * Returns: The new address of the vma or an error. + */ static unsigned long mremap_to(unsigned long addr, unsigned long old_len, unsigned long new_addr, unsigned long new_len, bool *locked, unsigned long flags, struct vm_userfaultfd_ctx *uf, @@ -895,18 +909,18 @@ static unsigned long mremap_to(unsigned long addr, unsigned long old_len, { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - unsigned long ret = -EINVAL; + unsigned long ret; unsigned long map_flags = 0; if (offset_in_page(new_addr)) - goto out; + return -EINVAL; if (new_len > TASK_SIZE || new_addr > TASK_SIZE - new_len) - goto out; + return -EINVAL; /* Ensure the old/new locations do not overlap */ if (addr + old_len > new_addr && new_addr + new_len > addr) - goto out; + return -EINVAL; /* * move_vma() need us to stay 4 maps below the threshold, otherwise @@ -933,31 +947,28 @@ static unsigned long mremap_to(unsigned long addr, unsigned long old_len, */ ret = do_munmap(mm, new_addr, new_len, uf_unmap_early); if (ret) - goto out; + return ret; } if (old_len > new_len) { ret = do_munmap(mm, addr+new_len, old_len - new_len, uf_unmap); if (ret) - goto out; + return ret; old_len = new_len; } vma = vma_lookup(mm, addr); - if (!vma) { - ret = -EFAULT; - goto out; - } + if (!vma) + return -EFAULT; ret = resize_is_valid(vma, addr, old_len, new_len, flags); if (ret) - goto out; + return ret; /* MREMAP_DONTUNMAP expands by old_len since old_len == new_len */ if (flags & MREMAP_DONTUNMAP && !may_expand_vm(mm, vma->vm_flags, old_len >> PAGE_SHIFT)) { - ret = -ENOMEM; - goto out; + return -ENOMEM; } if (flags & MREMAP_FIXED) @@ -970,17 +981,14 @@ static unsigned long mremap_to(unsigned long addr, unsigned long old_len, ((addr - vma->vm_start) >> PAGE_SHIFT), map_flags); if (IS_ERR_VALUE(ret)) - goto out; + return ret; /* We got a new mapping */ if (!(flags & MREMAP_FIXED)) new_addr = ret; - ret = move_vma(vma, addr, old_len, new_len, new_addr, locked, flags, uf, - uf_unmap); - -out: - return ret; + return move_vma(vma, addr, old_len, new_len, new_addr, locked, flags, + uf, uf_unmap); } static int vma_expandable(struct vm_area_struct *vma, unsigned long delta)