From patchwork Fri Aug 4 08:48:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Mikhalitsyn X-Patchwork-Id: 13341478 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 596BFC04A94 for ; Fri, 4 Aug 2023 08:50:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229827AbjHDIuT (ORCPT ); Fri, 4 Aug 2023 04:50:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229739AbjHDIti (ORCPT ); Fri, 4 Aug 2023 04:49:38 -0400 Received: from smtp-relay-internal-1.canonical.com (smtp-relay-internal-1.canonical.com [185.125.188.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D08DA4C0D for ; Fri, 4 Aug 2023 01:49:34 -0700 (PDT) Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) (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 smtp-relay-internal-1.canonical.com (Postfix) with ESMTPS id EBC67417BC for ; Fri, 4 Aug 2023 08:49:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1691138972; bh=StxqveXF5moq9iJU4D0IjENKfN6jaIfCw60woBc2a1E=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=dV95e+C6a8+U9YNmwYyII74LQQbMgCqRI2qE7d4jbZ8XgNEPoftl2N8GyUbCXIBdv gJ79USRnE/uMQtTg+//vj1HJ7ACh6h5wsiQrls2ehb6TZdxLyu4SZGZoO+UALGGIg1 oCQSAmBBtE/dRBAKqwtT9AxXKak6L4cv/ne1OGOvYFPMaiwaG435V0UP/ySBvwcmYw 26aTldcnxGaOoGb2O2Omk5P2h0tSDAgnfb26lgV9FG8SrbW0J8Zg99CA4A22MBlq7F 3Sbd/wGrhewOcfM9yifdT60aHednsSDpzb8bTV8c0B1DuOmZ6szcyPJsOzM1zPS8GZ 88hlgEj6ij2jg== Received: by mail-ed1-f72.google.com with SMTP id 4fb4d7f45d1cf-51da39aa6dcso1298872a12.2 for ; Fri, 04 Aug 2023 01:49:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691138972; x=1691743772; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=StxqveXF5moq9iJU4D0IjENKfN6jaIfCw60woBc2a1E=; b=J+QSXnduW5g0QTi31NkdNpcYyho1W26VuQ6GYyVL+ptl3j8cWMi0pwaERJSNOPRjbo nCikrBpyQ2NsQVxNk5/VHEaDoZyMJitlhnbI+mdkP9riFljhggMaNmISaJdPI58xGL8h uOOui1fnqhfA5SsR3axO3EP0A7kHe1qKUcjeh1QBxLbFwnxAi25UckdtXUql7is6Mljs L/39cplPfyZd4itJHJ3Rt/Tv3QIjkyy00UpitLfyf2wYjjSFRq3p2yxVugi8HzW1+IGs JJmogR/VCkvRolbJJn3+zZoxx52LZ2c4fhxNlLpFRro0CLKOfe/HszkcegE/OSBW7hq2 ljHw== X-Gm-Message-State: AOJu0YzncYg3rSQRDXyShKRliUTepDuZhVoYsTYtPqumHrlIk7VN9qrl 9Co2OpehElhMgDe2IgxewjprekpUpIYzKLIOZ4JRQKa85uzg/+GZgs+C3QfKr1yR5uKJuOPvJbx 1znj4WTFzknwwaXJG+BsslTNMa3q52rxcMLG43U7+N7LQqdRuPkE= X-Received: by 2002:a17:907:2c4d:b0:99b:bf8d:b7e1 with SMTP id hf13-20020a1709072c4d00b0099bbf8db7e1mr863832ejc.17.1691138971899; Fri, 04 Aug 2023 01:49:31 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHt0cJxyxNVN8MFBPcovFv21DNeI/vcPblkJxrD4B89INifTjeigoUO/zvfSlO7YIYpAZQAKA== X-Received: by 2002:a17:907:2c4d:b0:99b:bf8d:b7e1 with SMTP id hf13-20020a1709072c4d00b0099bbf8db7e1mr863822ejc.17.1691138971748; Fri, 04 Aug 2023 01:49:31 -0700 (PDT) Received: from amikhalitsyn.local (dslb-088-066-182-192.088.066.pools.vodafone-ip.de. [88.66.182.192]) by smtp.gmail.com with ESMTPSA id k25-20020a17090646d900b00992e94bcfabsm979279ejs.167.2023.08.04.01.49.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Aug 2023 01:49:31 -0700 (PDT) From: Alexander Mikhalitsyn To: xiubli@redhat.com Cc: brauner@kernel.org, stgraber@ubuntu.com, linux-fsdevel@vger.kernel.org, Jeff Layton , Ilya Dryomov , ceph-devel@vger.kernel.org, Alexander Mikhalitsyn , linux-kernel@vger.kernel.org Subject: [PATCH v9 02/12] ceph: stash idmapping in mdsc request Date: Fri, 4 Aug 2023 10:48:48 +0200 Message-Id: <20230804084858.126104-3-aleksandr.mikhalitsyn@canonical.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230804084858.126104-1-aleksandr.mikhalitsyn@canonical.com> References: <20230804084858.126104-1-aleksandr.mikhalitsyn@canonical.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org From: Christian Brauner When sending a mds request cephfs will send relevant data for the requested operation. For creation requests the caller's fs{g,u}id is used to set the ownership of the newly created filesystem object. For setattr requests the caller can pass in arbitrary {g,u}id values to which the relevant filesystem object is supposed to be changed. If the caller is performing the relevant operation via an idmapped mount cephfs simply needs to take the idmapping into account when it sends the relevant mds request. In order to support idmapped mounts for cephfs we stash the idmapping whenever they are relevant for the operation for the duration of the request. Since mds requests can be queued and performed asynchronously we make sure to keep the idmapping around and release it once the request has finished. In follow-up patches we will use this to send correct ownership information over the wire. This patch just adds the basic infrastructure to keep the idmapping around. The actual conversion patches are all fairly minimal. Cc: Xiubo Li Cc: Jeff Layton Cc: Ilya Dryomov Cc: ceph-devel@vger.kernel.org Signed-off-by: Christian Brauner Signed-off-by: Alexander Mikhalitsyn --- v4: - don't call mnt_idmap_get(..) in __register_request --- fs/ceph/mds_client.c | 5 +++++ fs/ceph/mds_client.h | 1 + 2 files changed, 6 insertions(+) diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 9aae39289b43..8829f55103da 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -12,6 +12,7 @@ #include #include #include +#include #include "super.h" #include "crypto.h" @@ -1121,6 +1122,8 @@ void ceph_mdsc_release_request(struct kref *kref) kfree(req->r_path1); kfree(req->r_path2); put_cred(req->r_cred); + if (req->r_mnt_idmap) + mnt_idmap_put(req->r_mnt_idmap); if (req->r_pagelist) ceph_pagelist_release(req->r_pagelist); kfree(req->r_fscrypt_auth); @@ -1180,6 +1183,8 @@ static void __register_request(struct ceph_mds_client *mdsc, insert_request(&mdsc->request_tree, req); req->r_cred = get_current_cred(); + if (!req->r_mnt_idmap) + req->r_mnt_idmap = &nop_mnt_idmap; if (mdsc->oldest_tid == 0 && req->r_op != CEPH_MDS_OP_SETFILELOCK) mdsc->oldest_tid = req->r_tid; diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 717a7399bacb..e3bbf3ba8ee8 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -300,6 +300,7 @@ struct ceph_mds_request { int r_fmode; /* file mode, if expecting cap */ int r_request_release_offset; const struct cred *r_cred; + struct mnt_idmap *r_mnt_idmap; struct timespec64 r_stamp; /* for choosing which mds to send this request to */