From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10olkn2033.outbound.protection.outlook.com [40.92.40.33]) by sourceware.org (Postfix) with ESMTPS id 1D269385842B for ; Sat, 31 Jul 2021 17:37:17 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 1D269385842B ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=PSh9SaXuCqxqlBKlEmepVi7bS4jdKEo5U5GrEYaMNOMM/kl8m70G0fqoTGTMcajoprRX4QbbdZrI0qZwMZQCK+EnReDg/9XkNXYLB9E6gWc6kWv+VqdJp6hDIrDfA4QOP9mS1Fe1KiiOdJmFXA4BQ78yYYSkP9dmdLBwXlIfT0IhXHi7CihK+kWrlLFIl9zoOCfoxFd4olDVHOoUjN+MXbkF5RR8M9cYO4wPEcXgb1/DyXiYfkrRSJX3zjf5WEy4UcYpazTygqD5kn2aKpIcXclrnLNezZQFypHJhjeJAaZxM0JG7Kt6oClpQ0U0k4VZNQrzwzC4yIRAdmfTK7/g2Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=/dKoUUlbOm51NxS8XNhqIkx8PNoj4cPHLMnOAKeew5w=; b=WARfbybPMnGDGdhU+EsqXjalxrED2tzVfqxZe5BUiRZljPFn1HMbamOqW7x1is874iyQeDSFzMGupgq+bWc3H7pGE8eiwqhoFUbWX481XkbJ+UBMAPnL3XnO1HqomTdfRoRAbS0RKJtbZaVJziVyBVt5gwVG1MMc5yin4uHG+4h2ia5wgupdd67DXjFGiWfRuNtIgPlkKMDZL5HSdFuwxvuMAMAgMlg25YJYu05zZ5Ymvi8uTLVYjLqUcPktzDrDUN2MAwV+T18NU2ToAfj6TUTUL6IZZP4838d071xSKJkZqpUlpHu97rsBvAzDmC9pW7Dbv/Bz8pWCYOfoS/zaFQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=none; dmarc=none; dkim=none; arc=none Received: from BN7NAM10FT019.eop-nam10.prod.protection.outlook.com (2a01:111:e400:7e8f::41) by BN7NAM10HT085.eop-nam10.prod.protection.outlook.com (2a01:111:e400:7e8f::458) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4373.18; Sat, 31 Jul 2021 17:37:16 +0000 Received: from BN8PR18MB2643.namprd18.prod.outlook.com (2a01:111:e400:7e8f::48) by BN7NAM10FT019.mail.protection.outlook.com (2a01:111:e400:7e8f::173) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4373.18 via Frontend Transport; Sat, 31 Jul 2021 17:37:16 +0000 Received: from BN8PR18MB2643.namprd18.prod.outlook.com ([fe80::8bc:1d7c:bb63:3b10]) by BN8PR18MB2643.namprd18.prod.outlook.com ([fe80::8bc:1d7c:bb63:3b10%5]) with mapi id 15.20.4373.026; Sat, 31 Jul 2021 17:37:16 +0000 From: ur bridge To: "libc-help@sourceware.org" Subject: Where could I find the definition of __vm_deallocate() called by __munmap()? Thread-Topic: Where could I find the definition of __vm_deallocate() called by __munmap()? Thread-Index: AQHXhi/jIJ6z4GUyekST6HDeA3Wb9w== Date: Sat, 31 Jul 2021 17:37:16 +0000 Message-ID: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-incomingtopheadermarker: OriginalChecksum:AE92B3730B7F845F10FE0092CCFAC20BD12C58C99ADD940E2824F6649C34901D; UpperCasedChecksum:CC81D3F16D503FFC9F3B771568ABFF40ABBAC33FE8DE287650132C4B5C55F817; SizeAsReceived:6736; Count:41 x-tmn: [r+gVb5gRQSwoaCnfxlewCmYOkDXkFPcU2ygmdekEuFs=] x-ms-publictraffictype: Email x-incomingheadercount: 41 x-eopattributedmessage: 0 x-ms-office365-filtering-correlation-id: bf368802-d65d-4c31-1383-08d95449d6e1 x-ms-traffictypediagnostic: BN7NAM10HT085: x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: RhSa0PQTJ5g1Y7I5v5LmNWv9pnhUNEdAZ2YMB6V8/lreCOu061uKzOM6ar2ginZA79uyMWc3nlmdR5nvxthQyqyqVY9h4nqDxsDUwZjW2SQHT2QSJHbbmMQPvkF+3kDr1qVMCz/U5RNZUWW7qA1HgowYBF1jhq7nV06468DYyF0OjJJ+ZY/h4pSteSUzwZVTmP57YiHtdO05/MgbkVFwsPd9B21Af7YIFYsn0/JkpwWvmkPqoztslrZNXgOs6VZTgoRH3sXgUidkd32/PuPGhiLemSBhWETrpp7Ov2IDSjn6i4InCSMQImQsp/oFb8CFZNbRaRiDFyJWi5b0po4JIuVN0P9UALCH6IppEFQea9OtTV1dKqH0AT2XKYJiIhvUE61Cf5ATNylw/chwq9+sojGQ57vzILxHo6aK/QELKE26sfUASv+V3iH+/tS6I61f x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: QqWiNb6DBGnjoLekVD2otuOKLOmTmXWF5K9I+vpNyKtGZ2bgKIRu400owqEo5D1eV97wbK8lq47Ox7o3XJLdL9xEa9t12GWKv5WJWvoUpWMrjTU6kWV4o36AJ6FtpEj5Jr+/8RGTWljoAl7G2FX6Pw== x-ms-exchange-transport-forked: True MIME-Version: 1.0 X-OriginatorOrg: outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-AuthSource: BN7NAM10FT019.eop-nam10.prod.protection.outlook.com X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-CrossTenant-Network-Message-Id: bf368802-d65d-4c31-1383-08d95449d6e1 X-MS-Exchange-CrossTenant-originalarrivaltime: 31 Jul 2021 17:37:16.2917 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7NAM10HT085 X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: libc-help@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-help mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 31 Jul 2021 17:37:18 -0000 Hello, I=92m reading the malloc.c code, and find that when __munmap() is called to= free a mmapped chunk, the control flow will fall into sysdeps/mach/munmap.= c, where __vm_deallocate() will be called. However, I cannot find its defin= ition. Where could it be? (Actually, I expected that syscall munmap() would be called in Linux kernel= . But there is no such a declaration in sysdeps/unix/sysv/linux/.) Thanks