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=-16.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 8C8D7C43140 for ; Wed, 12 May 2021 19:49:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6CABF61428 for ; Wed, 12 May 2021 19:49:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344850AbhELTqp (ORCPT ); Wed, 12 May 2021 15:46:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:51784 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352641AbhELSDw (ORCPT ); Wed, 12 May 2021 14:03:52 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id CBE0961438; Wed, 12 May 2021 18:02:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620842563; bh=5MN9HffFvufeYdH7PbM0Tw3wI13Ccqot2r2gf4cvmwM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GKl6U8+C6mfRBPw4khWqQBE2TidmEQzfmyK9hSdgGFsSZN6DaDvXw6AM70vgIUy+V YZh2ftSmlQBugiGwnB/YdzFOS5wlK+aF5ROIcmLTxZMKQutinoCC7kSv25nTEAq4E5 xp1eDLCokoyvoPZzv8SX+k/ffT0p9i1uwglTAOIoAYQz9iiraAIsPIk695DENL5onT 8ZWIxKlsBEoXZuLbRHPmY7zcQDL1cl4dLrVrw/RfvhDhYqVEpxiwYXgqZDkTnhE/hN SoX4PQ5NUU2DCACdAueEQS1HO9yva3cvEdff8bKz0MSyFcol/7ThPvxOYbVx9LuCAJ Bak0URyKiXlqw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jeff Layton , Al Viro , Ilya Dryomov , Sasha Levin , ceph-devel@vger.kernel.org Subject: [PATCH AUTOSEL 5.11 22/35] ceph: don't clobber i_snap_caps on non-I_NEW inode Date: Wed, 12 May 2021 14:01:52 -0400 Message-Id: <20210512180206.664536-22-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210512180206.664536-1-sashal@kernel.org> References: <20210512180206.664536-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jeff Layton [ Upstream commit d3c51ae1b8cce5bdaf91a1ce32b33cf5626075dc ] We want the snapdir to mirror the non-snapped directory's attributes for most things, but i_snap_caps represents the caps granted on the snapshot directory by the MDS itself. A misbehaving MDS could issue different caps for the snapdir and we lose them here. Only reset i_snap_caps when the inode is I_NEW. Also, move the setting of i_op and i_fop inside the if block since they should never change anyway. Reported-by: Al Viro Signed-off-by: Jeff Layton Signed-off-by: Ilya Dryomov Signed-off-by: Sasha Levin --- fs/ceph/inode.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 2caa6df0bcdf..5eb7eeab3828 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -87,14 +87,15 @@ struct inode *ceph_get_snapdir(struct inode *parent) inode->i_mtime = parent->i_mtime; inode->i_ctime = parent->i_ctime; inode->i_atime = parent->i_atime; - inode->i_op = &ceph_snapdir_iops; - inode->i_fop = &ceph_snapdir_fops; - ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ ci->i_rbytes = 0; ci->i_btime = ceph_inode(parent)->i_btime; - if (inode->i_state & I_NEW) + if (inode->i_state & I_NEW) { + inode->i_op = &ceph_snapdir_iops; + inode->i_fop = &ceph_snapdir_fops; + ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ unlock_new_inode(inode); + } return inode; } -- 2.30.2