From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outbound-ip168a.ess.barracuda.com (outbound-ip168a.ess.barracuda.com [209.222.82.36]) (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 D1318B672; Mon, 17 Feb 2025 00:45:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=209.222.82.36 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739753146; cv=fail; b=sXGZIOGdGQ4b7dsw+A2Dj28v3ZE2vjpHsRUUo5zohLXhlGp2QyBBxfKW/ODTiNbucmUcf0eSawoykOVCTbdUPVCXL/Zd4z9FHOWDdMT0QyX+WfH+z3fxbLWPmZadjNe73GuMHSQ+tF6Hs/JmCy/987jKQeEBnT0ersyuefgLjMc= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739753146; c=relaxed/simple; bh=iYtd1r1XLtDtR3BPEbjR585GNtbHHHLn7/nOtlNsV7w=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=oqbUSv1gkt9Z84Gfv8qQrFRkGI3FIU+s42MHkOQjRjFJ6nJpvK32plJuB2TDIfXmZ5b60olI+3PzqjOSrdtOI5BWPtYPYB3IhuL0q6lwOjLU1DIabCGXP5Rqvs1dgkKj2Ohnb0Vw+7aV/ePtnD5ybojcD1bv3HY27lKYt1rL60w= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=ddn.com; spf=pass smtp.mailfrom=ddn.com; dkim=pass (1024-bit key) header.d=ddn.com header.i=@ddn.com header.b=dkgQdio0; arc=fail smtp.client-ip=209.222.82.36 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=ddn.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ddn.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ddn.com header.i=@ddn.com header.b="dkgQdio0" Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12lp2173.outbound.protection.outlook.com [104.47.55.173]) by mx-outbound-ea41-28.us-east-2c.ess.aws.cudaops.com (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 17 Feb 2025 00:45:19 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=DQusfoeXdIC2/172AVF3M5BusddskOcPjvNKI6B3EzhsesthKq3sFlb4mJXSHeM1CVCLZ5c9TJsVDgBNQStkhkWIIHU5NWpjrsP6C0Mj9QgCj7KWTOHnSD74iAr2sIPbZmBM/oJaMeN6rpkjMdrl5uGK61Wj/3mXm3k7tzvrtiucpGgKDOLea4ONjaGszHqao6Ei0TnhMlNeUXsothn0wIsnFppXRNq+Du2tvC2XGxnJU3GY2q8sfutP5Vgw0NEEVgXhwjSQ9UtwqkHZqbDsaSbBOWmuQDj431oVhRPZqHDBmKmI/MBRdY65HG+vBDWlhYEIf2aMJMl7nBZKAsbbdA== 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=dLZXDTHk3vK0Ai4Akb24AXjXn53eh11wbT4EMjqtnsk=; b=av8L8PMAL7ggO360c4wBveGSSrzTCLiyEFWuM29bPwqbY3TnyXN6W0orxlwpNRlKN+i8eDTF2nwQnZxAUiPQb9JdJVQ1fEaDakHuv4cyS1mN3NdUrR4x9zuHkyBGALaWXtaMD5lEuEyU37PlAmZ8UnYaRrNiV1U6snpkCNKbxtSUnGWsQkHXDMMnGhtHwmhecY6+44Js0A4yWcO53man06+1iPGCj9OvXxLQkxPcOX6dPwFs9quUev6YYlBuImSr2MhbTkX5o2fxnKsiymA/WnpK5GmqB120FjBRhbMCP7B20gSOal9IJK10NM0W1ZA7INglnxeVFDl2qrHJYZNmEA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=ddn.com; dmarc=pass action=none header.from=ddn.com; dkim=pass header.d=ddn.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ddn.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=dLZXDTHk3vK0Ai4Akb24AXjXn53eh11wbT4EMjqtnsk=; b=dkgQdio0U2lmtA2SnHBid7chFsP6nQHuzERDM0np+wcC5g7hcEKQ/pu3uGo/j7LiimrHrCPSHdSBmj715iT4PA3xv+j8xIR5ldq0R0OaLWCnDBscpNiyysFVdcULylJZEoB6iwbm0XHD/PPzraszy6ho9uixOG7BqXVoDq0FVPM= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=ddn.com; Received: from MN2PR19MB3872.namprd19.prod.outlook.com (2603:10b6:208:1e8::8) by PH7PR19MB7533.namprd19.prod.outlook.com (2603:10b6:510:27c::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8445.13; Mon, 17 Feb 2025 00:40:11 +0000 Received: from MN2PR19MB3872.namprd19.prod.outlook.com ([fe80::739:3aed:4ea0:3911]) by MN2PR19MB3872.namprd19.prod.outlook.com ([fe80::739:3aed:4ea0:3911%5]) with mapi id 15.20.8445.017; Mon, 17 Feb 2025 00:40:11 +0000 Message-ID: <3fac8c84-2c41-461d-92f1-255903fc62a9@ddn.com> Date: Mon, 17 Feb 2025 01:40:06 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 2/2] fuse: add new function to invalidate cache for all inodes To: Luis Henriques , Miklos Szeredi Cc: Dave Chinner , Alexander Viro , Christian Brauner , Jan Kara , Matt Harvey , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250216165008.6671-1-luis@igalia.com> <20250216165008.6671-3-luis@igalia.com> From: Bernd Schubert Content-Language: en-US, de-DE, fr In-Reply-To: <20250216165008.6671-3-luis@igalia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: PR3P251CA0010.EURP251.PROD.OUTLOOK.COM (2603:10a6:102:b5::17) To MN2PR19MB3872.namprd19.prod.outlook.com (2603:10b6:208:1e8::8) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN2PR19MB3872:EE_|PH7PR19MB7533:EE_ X-MS-Office365-Filtering-Correlation-Id: 0c04fb82-13b6-4a93-2ba1-08dd4eeba224 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|10070799003|376014|7053199007; X-Microsoft-Antispam-Message-Info: =?utf-8?B?Z0dleEx3S3VZT0VJeTJ5cHhpUG1mNEdZV1pqRTFUckZNdlVKS3JWZjFmVjMw?= =?utf-8?B?VEVEL1dpVWpmTDIxQTJBQ1JpOVdwZnd2Vnh0MVZaZC9neDRuNXZ6STlZVkM1?= =?utf-8?B?Q1pIbHR1cTBReXFoUk1XcXpjcEhDaGhrcUpMVnZHd3NQTHA1WGY2SFRMd0No?= =?utf-8?B?U1NYckQ4RVp2dWZaRUZvaXpURTVwYmhCcVlwWHpaZUtndUF3ZXc2ZGM4SmxI?= =?utf-8?B?UXp0Rjl1TmNHalI1LytGN05hYnk5Nk1nNElhQUs3VHdIcnp6NnpQQVB4TTB1?= =?utf-8?B?bzR0THdQS0h4QnIzcnhUUWQ0M1ErVlV3YjdwcDByOHNOUTNjRmxVZmlFS1Av?= =?utf-8?B?ZWc1RWRxcnBNT3VIK1NMZHhtbkVtdHRiWTEweGNubjlzWGRQZW1ackw2Y21W?= =?utf-8?B?QkZOZGdpY0tveUlIOWhNZVkwT1JGOHNpY0daV0NqZGRaN3BUdW9qUlY0RXdt?= =?utf-8?B?V2sxdmtJWXhuSUlabDRUNTcrTlBUbXlBeS9DVkhJTFNZZGdLNzl4UEM2SkdE?= =?utf-8?B?K25Ed3FrdzhITGh4M0ZLRFQrMlV0S2RjZXlaWlViR1VWNndQQjk0ZCtiWkdE?= =?utf-8?B?K01MYkkxdWt5UGRwOVkyVG9nZzlYQWVrMmQwaUc3UUt0MzB1QWdNZ0ZWVnlt?= =?utf-8?B?UzZmNHQ2aExWVSt5T2FnaUswclRQZm5FQjJsNkhnRkE0cXJUem1vSEtvUUcy?= =?utf-8?B?Zmtsd3hLSkJqTTZDTi9SbGptRG13QkkzZlQvVzdGdUh2TGdRclVCNjlONStn?= =?utf-8?B?Qjl4ekFIZEtOM3dDMjViZ3BFQXVHMFRSNCs0RVg4R0VJUXEzYVRHWTZsVzh2?= =?utf-8?B?NEZJMWJ6SFFQeEhvWGsxVXdIQmpuN1NvSWFsWTdrRTM2SXVaZnRtRkFYdVJ6?= =?utf-8?B?V0N3S01ZYnFJY2dhdjJpQnRCT3AyNWRhUXFQTHVZSlZRVVJLSzZhRTE3cnBq?= =?utf-8?B?TU5CU29ZRkhSZ1E0UlFONXdpY2VKZy9EbVN5SFp4VzVwejJjZVU5cjQ0VlJV?= =?utf-8?B?elJMUnNhanRHNmdOOTB4dFRCZFRoVXhpVUJ1amt6VmdZVjhFeWl5ZmVwRlNx?= =?utf-8?B?VDcvdDBESXJKbGFqeVB5Tm80cmtVMCtaZVJHOHl4ZjkzL1Zpd2FxWFVLWGRF?= =?utf-8?B?MUREZEZXTU5MeGpPYnlVODNEUGY5Njd5Y1A5U0E3ZkV2aDc2QVZ5N0I3cGht?= =?utf-8?B?SndKaXNSRzY5Z2ZSOEJVU1lDVmJnaXluYUNyTU12WWpHM2p3Vzc5VGpaSlQ0?= =?utf-8?B?Mi83K3BLOFB6am5lbk5IL3hmdlhSQVNWS0MvRnR3WGd1eitNWFVBVGhSK1Nl?= =?utf-8?B?aUkyTDNnVlRraFJmUmYwWitsUzZNZ1ZvZE5QUGRQMjF1OENyT0V3dzkzVnUv?= =?utf-8?B?Y2FOc29YelJUb3F1SjNCTWFVajk2L1ZCSWVuUXhBeGcwOVZpT3psM0xBT2Zm?= =?utf-8?B?N1VINEZ0QTNGQTRoRFZsQVR4TmdFZW9JQ2xrUmJTUmwybldtZjE5b2hSTjV3?= =?utf-8?B?cEtxMWNGTkRWdS9GY2lRSkdrNS9kM3M5MkVMUVk1L1Y5N1BEWDR4eDJXZnFu?= =?utf-8?B?a09qNzh4VzBIN1dsMXg5QThCMEdjaU1CTUNPeXVSUG93aW9TVmh0YnpVekpI?= =?utf-8?B?M0hXcnJ3Skg3MmVTQmF6T3MzcFJRdm1aa0xJeCtKNUtMRUZ2ckRjL2pyYlFy?= =?utf-8?B?MFVrbW5LZXVxMUpHelJLZ1h6NTMrb0psS1orNnZEdUIvTk5jUjJJRFJWVHcw?= =?utf-8?B?M0kyb1pjQ0tJRm9YTjB6azdPTFIvQXBxdjU2TFpjenJzU1ZqdGVXMENyTkRs?= =?utf-8?B?QW5kcDdzOUZRZDNaZkdubHpLRHgvcGhMS2dwVFJJMlNuS1dMaDdiL3hSRENM?= =?utf-8?Q?inj0aWBhfW/Kl?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN2PR19MB3872.namprd19.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(1800799024)(10070799003)(376014)(7053199007);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?SE5NeUJaTWRkQnFzQTdvZmRuRk5TTDNQNnFYc3dPYWdCck5UMTRJRlhFUWdY?= =?utf-8?B?cC9tMkFlMGtRZ0UyQWJKdXl4RmVZdVZZUlB1alUreU9RVXZGajRqbmJkbkhP?= =?utf-8?B?M001dE5qaU81TUhNVmlXTFBOZ0p6V2pkT0tWcHI4N20vVEJNN2ZXNWxHN2k2?= =?utf-8?B?UVEyVkY4MzZFNjJiWW9uNXB0Uk5aMEtpS054Wk9OdWVDMExtRUx3YytmM29R?= =?utf-8?B?K3M5NUVXNGRET0J3b1hwczU0NnU4MFVJb1VQcndXaG5VbnQwR3haRFI2M3Fz?= =?utf-8?B?YTNoZTRKMG9DRk9rOGdnMi8zQkxkbUZzcHZkcTZIZVBwdkJRNGk1aUE5Zld2?= =?utf-8?B?NGlzVWNjaVVVMDZUdXl2QXViczc1QUFJYVk1OWZSL1k4L3BQS1NSY2d3V0Qz?= =?utf-8?B?QVRsWnNJWjNEbCs4MVlqSldwaVlPM0dOSFVzRWJxb3VTOFJ5RXNralBSbCta?= =?utf-8?B?UGpCVGhwYkM2WFZ2U2ltdWZFbmpZZ21kUVU1TXNtb1NrajJkRWtjT0FjTmYy?= =?utf-8?B?YmxXTHNkaE9yMzc1SHV4UXk3SFZHUk51ajd3N1k1Z2c5UkI3SG5ITGsyaVFz?= =?utf-8?B?dHF6anJqSlJHV3UrdUNiQ1hsYU5FY1FmV3ZBS0t5a0EvZHFkVG1hSWlXdU5W?= =?utf-8?B?azk4OVJnZ2RMYmY4Q25nMVllYWxPWFhqbG96cEdMVWd0TGxPRG5PWXNKb1ZS?= =?utf-8?B?b1IyNlFRR1FPK2ZZY0YwY2JTK2p4NHExS2RVMEdJTkhyOGFxZ1FHNjBaOHlv?= =?utf-8?B?bWVzWUQrWVhlNDFsL1BDSlNidEJacEk2SkthLzRUTm5IVlQ0YzcxaXA3OXNL?= =?utf-8?B?NEZlNWMyVm1ZNVRiUUlPOHNwbU5hL2tOY3NxM0F0YTBDdkluVWgzM1kwei9u?= =?utf-8?B?dks5RjZmMkVxVmJxMGlyaUF2eTlvNjlaUWVxNWdMMWVFdzFFam8vL3JtbFVm?= =?utf-8?B?alFvajNpVjVLVERpbzcwenBVTHlTaFVDUzZxOW5yd085bnJaYUMydTYvMWUv?= =?utf-8?B?dkhVWDZIaUtTKzl2Zkd1ZDhpV0djSzg3Q21UQ29jTDVuWDRFdktLZW5SV2Vu?= =?utf-8?B?bEVoeXUwYlRERDdLMXFON210L2tUbnpqL1BoUTRBcWxPOHpRcjZ5ZTBUZXlh?= =?utf-8?B?cTh6RWxkL3M3R0VUTHZyVnlIM0Rub3lHRE1oWURJV3c4QmQxTnFyRC94aVhq?= =?utf-8?B?VEdzbjZ3UHRJMkxGNzd2RTVySlRBejlhTDFsc29iUXczaG9TeXZ1MGRXVE1a?= =?utf-8?B?Sll2dEI4RDFianBHMk9Ray9KVm9DV240RWVCVlNqaXEzdUQ4K0VUWTBxRHFu?= =?utf-8?B?U3NhMUdRVVNmVVp0YTBtc3VmSDhJb1dod2NKTVlaRnUrNXRIMndrT3NLTWxn?= =?utf-8?B?UXIxaEZOVWVNaG9QQTdpUkJlcERoZExFaDgxOEdiZGRYbXpTMm5HUk5teVhH?= =?utf-8?B?eXpsRGhxS0E5cTZyclM0SnQ0b1JhSHBLY0hxWC9MT1JQcjRKRTNrbTRlSTFF?= =?utf-8?B?eUR2SEpLVHoyd0gyR2ppVUd1TWQwQVV0RU50NXZydXhESWttL25FNGhyK1hU?= =?utf-8?B?N1RKN3lOMXlDK1RqVUJZaTBjTk1hSFE2S0JLaC9ZVEl0d1dzMDUzdlZIZGNo?= =?utf-8?B?VWk4bmJYdlVjQUVkcG0rbUhnZGRqbjE1SFVTK0NnTTE5SllXeUpFdFNXVThD?= =?utf-8?B?ajBKYWxtZkhNSG03Y1BQenQzaDlYbW0yUVN4SW5FK29oVHl5U29BcFFOYmkr?= =?utf-8?B?NCtQZDVzNi94anczQVY5NUJjUVhTOVd3aXNSNXIxblJoUTJMYktqREdiaStO?= =?utf-8?B?OTN2Skl3bllnc2RtS1Q5Nzh6VkMzZEZybG5icndFWldRV21raGp1OVdFaFRL?= =?utf-8?B?SHI3NnFGME93ZmNJbDU0bFQ3SmliVXRIdUc5ckcwOGhXUGt4Qm5yTy9JQVVJ?= =?utf-8?B?aWRrQzh3aDFFRWI5eVVnczVQam4wMnU0elFhNmhDdHBUOHJTMTlCMFJaenNI?= =?utf-8?B?THdYTGw3ZGpwZjVZZGgrWHdaWG82NVVHWjZEQkMvZjdwUTFMRlU5MHpyL0I3?= =?utf-8?B?OUJab0pib0w0aVQxb3BHL1MyQzhNZDZjTk5yeGlxSVNyQVVJdG1uVU9Yd2N4?= =?utf-8?B?MHpyTkxoMTQwVEFVWXpjMlNNc0hOR0x0N0txdWxsWDhuZEd5UkNqRlR2SWNj?= =?utf-8?Q?jyy/BCp0oUI/0AmwxFSFChSchA1pYgvzwbS66XVIpHvs?= X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: ddn.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0c04fb82-13b6-4a93-2ba1-08dd4eeba224 X-MS-Exchange-CrossTenant-AuthSource: MN2PR19MB3872.namprd19.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Feb 2025 00:40:11.2160 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 753b6e26-6fd3-43e6-8248-3f1735d59bb4 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: dqyv7byHptrA15Z0P73JLcWPGvJrBELI9HOWso9mbbHx2d2dpl7QBqcfFfA0gTK3u+ATOr1ZCE8sHCodMBgZzg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR19MB7533 X-BESS-ID: 1739753119-110524-3255-40378-1 X-BESS-VER: 2019.3_20250210.2243 X-BESS-Apparent-Source-IP: 104.47.55.173 X-BESS-Parts: H4sIAAAAAAACA4uuVkqtKFGyUioBkjpK+cVKVsZAAGRlAAUNkk2NUkzTUkzSzM ySk4B0sqlJqlliYqJFSqqBmbGhUm0sAJc/5lNBAAAA X-BESS-Outbound-Spam-Score: 0.00 X-BESS-Outbound-Spam-Report: Code version 3.2, rules version 3.2.2.262567 [from cloudscan21-86.us-east-2b.ess.aws.cudaops.com] Rule breakdown below pts rule name description ---- ---------------------- -------------------------------- 0.00 BSF_BESS_OUTBOUND META: BESS Outbound X-BESS-Outbound-Spam-Status: SCORE=0.00 using account:ESS124931 scores of KILL_LEVEL=7.0 tests=BSF_BESS_OUTBOUND X-BESS-BRTS-Status:1 On 2/16/25 17:50, Luis Henriques wrote: > Currently userspace is able to notify the kernel to invalidate the cache > for an inode. This means that, if all the inodes in a filesystem need to > be invalidated, then userspace needs to iterate through all of them and do > this kernel notification separately. > > This patch adds a new option that allows userspace to invalidate all the > inodes with a single notification operation. In addition to invalidate > all the inodes, it also shrinks the sb dcache. > > Signed-off-by: Luis Henriques > --- > fs/fuse/inode.c | 33 +++++++++++++++++++++++++++++++++ > include/uapi/linux/fuse.h | 3 +++ > 2 files changed, 36 insertions(+) > > diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c > index e9db2cb8c150..01a4dc5677ae 100644 > --- a/fs/fuse/inode.c > +++ b/fs/fuse/inode.c > @@ -547,6 +547,36 @@ struct inode *fuse_ilookup(struct fuse_conn *fc, u64 nodeid, > return NULL; > } > > +static int fuse_reverse_inval_all(struct fuse_conn *fc) > +{ > + struct fuse_mount *fm; > + struct inode *inode; > + > + inode = fuse_ilookup(fc, FUSE_ROOT_ID, &fm); > + if (!inode || !fm) > + return -ENOENT; > + > + /* Remove all possible active references to cached inodes */ > + shrink_dcache_sb(fm->sb); > + > + /* Remove all unreferenced inodes from cache */ > + invalidate_inodes(fm->sb); > + > + return 0; > +} > + > +/* > + * Notify to invalidate inodes cache. It can be called with @nodeid set to > + * either: > + * > + * - An inode number - Any pending writebacks within the rage [@offset @len] > + * will be triggered and the inode will be validated. To invalidate the whole > + * cache @offset has to be set to '0' and @len needs to be <= '0'; if @offset > + * is negative, only the inode attributes are invalidated. > + * > + * - FUSE_INVAL_ALL_INODES - All the inodes in the superblock are invalidated > + * and the whole dcache is shrinked. > + */ > int fuse_reverse_inval_inode(struct fuse_conn *fc, u64 nodeid, > loff_t offset, loff_t len) > { > @@ -555,6 +585,9 @@ int fuse_reverse_inval_inode(struct fuse_conn *fc, u64 nodeid, > pgoff_t pg_start; > pgoff_t pg_end; > > + if (nodeid == FUSE_INVAL_ALL_INODES) > + return fuse_reverse_inval_all(fc); > + > inode = fuse_ilookup(fc, nodeid, NULL); > if (!inode) > return -ENOENT; > diff --git a/include/uapi/linux/fuse.h b/include/uapi/linux/fuse.h > index 5e0eb41d967e..e5852b63f99f 100644 > --- a/include/uapi/linux/fuse.h > +++ b/include/uapi/linux/fuse.h > @@ -669,6 +669,9 @@ enum fuse_notify_code { > FUSE_NOTIFY_CODE_MAX, > }; > > +/* The nodeid to request to invalidate all inodes */ > +#define FUSE_INVAL_ALL_INODES 0 > + > /* The read buffer is required to be at least 8k, but may be much larger */ > #define FUSE_MIN_READ_BUFFER 8192 > I think this version might end up in static void fuse_evict_inode(struct inode *inode) { struct fuse_inode *fi = get_fuse_inode(inode); /* Will write inode on close/munmap and in all other dirtiers */ WARN_ON(inode->i_state & I_DIRTY_INODE); if the fuse connection has writeback cache enabled. Without having it tested, reproducer would probably be to run something like passthrough_hp (without --direct-io), opening and writing to a file and then sending FUSE_INVAL_ALL_INODES. Thanks, Bernd