From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752176AbcJCAqd (ORCPT ); Sun, 2 Oct 2016 20:46:33 -0400 Received: from out4-smtp.messagingengine.com ([66.111.4.28]:42401 "EHLO out4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751621AbcJCAq1 (ORCPT ); Sun, 2 Oct 2016 20:46:27 -0400 X-Sasl-enc: a+nR1EyzaghvPqlJEGxo7v5HZEqGnBvJJMhiQsoZh/cp 1475455585 Subject: [RFC PATCH 0/8] Patch series to fix autofs unreliable usage of d_mountpoint() From: Ian Kent To: Kernel Mailing List Cc: autofs mailing list , Al Viro , linux-fsdevel , Omar Sandoval , Andrew Morton , "Eric W. Biederman" Date: Mon, 03 Oct 2016 08:46:22 +0800 Message-ID: <20161003003646.4865.42500.stgit@pluto.themaw.net> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series fixes the potential problem of autofs returning ELOOP when a mount exists in a propogation private mount namespace other than the namespace in which the mount is to be performed. I'm posting the series as an RFC in the hope of catching stupid mistakes that I may have made before submitting to mmotm. Please note the series here is against the current Linus tree and may be slightly different when posted for inclusion in mmotm. Please review and post any comments. --- Ian Kent (8): vfs - change d_manage() to take a struct path vfs - add path_is_mountpoint() helper vfs - add path_has_submounts() autofs - change autofs4_expire_wait() to take struct path autofs - change autofs4_wait() to take struct path autofs - use path_is_mountpoint() to fix unreliable d_mountpoint() checks autofs - use path_has_submounts() to fix unreliable have_submount() checks vfs - remove unused have_submounts() function Documentation/filesystems/Locking | 2 + Documentation/filesystems/vfs.txt | 2 + fs/autofs4/autofs_i.h | 4 +- fs/autofs4/dev-ioctl.c | 4 +- fs/autofs4/expire.c | 8 +++- fs/autofs4/root.c | 71 +++++++++++++++++++++---------------- fs/autofs4/waitq.c | 13 +++++-- fs/dcache.c | 36 ++++++++++--------- fs/namei.c | 13 +++---- fs/namespace.c | 43 ++++++++++++++++++++++ include/linux/dcache.h | 4 +- include/linux/fs.h | 2 + 12 files changed, 133 insertions(+), 69 deletions(-) -- Ian