From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 127E6C25B47 for ; Fri, 27 Oct 2023 18:36:16 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20230601 header.b=NqveTysS; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4SHBFV5XS0z3dTZ for ; Sat, 28 Oct 2023 05:36:14 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20230601 header.b=NqveTysS; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=flex--seanjc.bounces.google.com (client-ip=2607:f8b0:4864:20::549; helo=mail-pg1-x549.google.com; envelope-from=3__87zqykdcaoa6jf8ckkcha.8kihejqtll8-9arheopo.kvh67o.knc@flex--seanjc.bounces.google.com; receiver=lists.ozlabs.org) Received: from mail-pg1-x549.google.com (mail-pg1-x549.google.com [IPv6:2607:f8b0:4864:20::549]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4SH9yB4pfCz3cVb for ; Sat, 28 Oct 2023 05:22:58 +1100 (AEDT) Received: by mail-pg1-x549.google.com with SMTP id 41be03b00d2f7-5b87150242cso2060205a12.0 for ; Fri, 27 Oct 2023 11:22:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1698430975; x=1699035775; darn=lists.ozlabs.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=pX02ozc7lSRzYa356XIJ+CMNCgv5fZ3NEfG1CClMU1M=; b=NqveTysS/27obkt4GNf5SzCoOXWeeQfQ21oiFZdRjVwUJ+H/NIfQSpJLZV6rkRX601 6IWnmu+5TOxeYdISyxiOX6qLTEJcJchIFFNR2XzaZA3iMIZmgS14xv7H9wegh5Fucv1g 1awPbCSj0W0iFuQTR+CfFTjd+TLKErt/IDVyxYXcXrKCvxxBq/JegfB2AOtN3ybKTJrV IRngPzo97zPaWhfFrmC9rHVoSL2SmLtY33QPzBpiYZ8E3TrWPwip8a+TXnxUQMRxRF7q 2tdQQkwkGgvhH+ahG6nWpbaL6kIO1U3Coxckrukv3Tfr97g18I2IrJDjrQwLpf4NU5tx u3mw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698430975; x=1699035775; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=pX02ozc7lSRzYa356XIJ+CMNCgv5fZ3NEfG1CClMU1M=; b=idzvWNV8+pxENexw69mvOlnXCmv3UT0oK2VQngX7VejQ2epRSzDQWTy8ZaYzInS4aR 1EuPCAiNC5yooRUfR4KHTozenBLuC11jIeOJOAn4LSZer3diKAPMm+OAFePosciMAaLi BYw1JOmKZCmC9VIPbwE3+KJ6lalxYmBbIwFS/jex4YLcoUZaBUwSWxanyEPU4DktKhmg J8L9waGMtaexhURYr1piOJOEceArZa4r9jyNPW3kL5bDnRkg/U3jhvtydHSkwwRneD8Q xOAiy/hZpHt+TV9dPmtBbpkee/h4mACpRIwE9/ZoUzLM07Cj3dkmBZfx4zPw/4nulf2C A4Tw== X-Gm-Message-State: AOJu0YzzJzwfdt4xwz3dgJtWQtqsenULflYaruz5YrZ3RgFMoXLeZk0q JKtY9eVb0SHw659BqpdF+U3RP62cKOI= X-Google-Smtp-Source: AGHT+IEZ2DkPV4b8zDYsItSE8S6PNMt34EGJVQ4YpOaZs5hBhRUHv0wBQpomiC7JG41zMwbv7hAHGw5rsZI= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:f7d6:b0:1cc:23d2:bb94 with SMTP id h22-20020a170902f7d600b001cc23d2bb94mr38516plw.1.1698430975510; Fri, 27 Oct 2023 11:22:55 -0700 (PDT) Date: Fri, 27 Oct 2023 11:21:57 -0700 In-Reply-To: <20231027182217.3615211-1-seanjc@google.com> Mime-Version: 1.0 References: <20231027182217.3615211-1-seanjc@google.com> X-Mailer: git-send-email 2.42.0.820.g83a721a137-goog Message-ID: <20231027182217.3615211-16-seanjc@google.com> Subject: [PATCH v13 15/35] fs: Export anon_inode_getfile_secure() for use by KVM From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Oliver Upton , Huacai Chen , Michael Ellerman , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , Alexander Viro , Christian Brauner , "Matthew Wilcox (Oracle)" , Andrew Morton Content-Type: text/plain; charset="UTF-8" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Cc: kvm@vger.kernel.org, David Hildenbrand , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Chao Peng , linux-riscv@lists.infradead.org, Isaku Yamahata , Xiaoyao Li , Wang , Fuad Tabba , linux-arm-kernel@lists.infradead.org, Maciej Szmigiero , Michael Roth , Ackerley Tng , David Matlack , Vlastimil Babka , =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= , Isaku Yamahata , Quentin Perret , kvmarm@lists.linux.dev, linux-mips@vger.kernel.org, Jarkko Sakkinen , Yu Zhang , "Kirill A . Shutemov" , kvm-riscv@lists.infradead.org, linux-fsdevel@vger.kernel.org, Liam Merwick , Vishal Annapurve , linuxppc-dev@lists.ozlabs.org, Xu Yilun , Anish Moorthy Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Export anon_inode_getfile_secure() so that it can be used by KVM to create and manage file-based guest memory without need a fullblow filesystem. The "standard" anon_inode_getfd() doesn't work for KVM's use case as KVM needs a unique inode for each file, e.g. to be able to independently manage the size and lifecycle of a given file. Note, KVM doesn't need a "secure" version, just unique inodes, i.e. ignore the name. Signed-off-by: Sean Christopherson --- fs/anon_inodes.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c index 24192a7667ed..4190336180ee 100644 --- a/fs/anon_inodes.c +++ b/fs/anon_inodes.c @@ -176,6 +176,7 @@ struct file *anon_inode_getfile_secure(const char *name, return __anon_inode_getfile(name, fops, priv, flags, context_inode, true); } +EXPORT_SYMBOL_GPL(anon_inode_getfile_secure); static int __anon_inode_getfd(const char *name, const struct file_operations *fops, -- 2.42.0.820.g83a721a137-goog