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 X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B94DEC4363A for ; Tue, 20 Oct 2020 18:39:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4453822244 for ; Tue, 20 Oct 2020 18:39:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603219179; bh=W5LjpHWQlr0scG8t+aiOKmCqvvPLgdMoOg7OLT1cL/I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=OiM5j/kQ1Q0GBhcRp30ajB4mHyXedyrCCLz4IENh7Tg7aiDz5UreQoF2OWOd2BN4G CltBWPNoPkQIwCstWtb7foouGt9ylUMX3b5cUGGODwPOtpKkS9klJn7S2MeQxVAp7+ EqOYelogBQqWpWMJ2+Ph31mxkiZTC9mzoqB0Ubsc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389151AbgJTSji (ORCPT ); Tue, 20 Oct 2020 14:39:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:51826 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389145AbgJTSji (ORCPT ); Tue, 20 Oct 2020 14:39:38 -0400 Received: from localhost.localdomain (c-68-36-133-222.hsd1.mi.comcast.net [68.36.133.222]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B899421D7B; Tue, 20 Oct 2020 18:39:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603219178; bh=W5LjpHWQlr0scG8t+aiOKmCqvvPLgdMoOg7OLT1cL/I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xeGgy8nrxtQjqnLgfGK+8KbU9hrD5fUrMU/aR3GrYMpZNKpcaktWKlYe39QckXqnJ eVI7ZqCacW6IWX2p/F3Od1vM+xWVcGdZS9nlInB5K88yMbySmMHyia8BB3gO+VdiaD qGhFTM7NQjoPsSinfIJ3AOrdEPsQP/esOFrprKxo= From: trondmy@kernel.org To: Daire Byrne Cc: linux-nfs@vger.kernel.org Subject: [PATCH v3 0/3] Add NFSv3 emulation of the lookupp operation Date: Tue, 20 Oct 2020 14:37:15 -0400 Message-Id: <20201020183718.14618-1-trondmy@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <279389889.68934777.1603124383614.JavaMail.zimbra@dneg.com> References: <279389889.68934777.1603124383614.JavaMail.zimbra@dneg.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org From: Trond Myklebust In order to use the open-by-filehandle functionality with NFSv3, we need to ensure that the NFS client can convert disconnected dentries into connected ones by doing a reverse walk of the filesystem path. To do so, NFSv4 provides the LOOKUPP operation, which does not exist in NFSv3, but which can usually be emulated using lookup(".."). v2: - Fix compilation issues for "NFSv3: Refactor nfs3_proc_lookup() to split out the dentry" v3: - Fix the string length calculation - Apply the NFS_MOUNT_SOFTREVAL flag in both the NFSv3 and NFSv4 lookupp Trond Myklebust (3): NFSv3: Refactor nfs3_proc_lookup() to split out the dentry NFSv3: Add emulation of the lookupp() operation NFSv4: Observe the NFS_MOUNT_SOFTREVAL flag in _nfs4_proc_lookupp fs/nfs/nfs3proc.c | 48 ++++++++++++++++++++++++++++++++++++----------- fs/nfs/nfs4proc.c | 6 +++++- 2 files changed, 42 insertions(+), 12 deletions(-) -- 2.26.2