linux-kernel - [GIT PULL] namespace fixes

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Date:	Thu, 16 Jan 2014 22:36:21 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	<linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	Aditya Kali <adityakali@...gle.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	Gao feng <gaofeng@...fujitsu.com>,
	Al Viro <viro@...IV.linux.org.uk>
Subject: [GIT PULL] namespace fixes


Linus,

Please pull the for-linus branch from the git tree:

   git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git for-linus

   HEAD: 41301ae78a99ead04ea42672a1ab72c6f44cc81d vfs: Fix a regression in mounting proc

This is a set of 3 regression fixes. 

This fixes /proc/mounts when using "ip netns add <netns>" to display the
actual mount point.

This fixes a regression in clone that broke lxc-attach.

This fixes a regression in the permission checks for mounting /proc that
made proc unmountable if binfmt_misc was in use. Oops.

My apologies for sending this pull request so late.  Al Viro gave
interesting review comments about the d_path fix that I wanted to
address in detail before I sent this pull request.  Unfortunately a
bad round of colds kept from addressing that in detail until today.
The executive summary of the review was:

Al: Is patching d_path really sufficient?
    The prepend_path, d_path, d_absolute_path, and __d_path family of
    functions is a really mess.

Me: Yes, patching d_path is really sufficient.  Yes, the code is mess.
    No it is not appropriate to rewrite all of d_path for a regression
    that has existed for entirely too long already, when a two line
    change will do.

Eric W. Biederman (3):
      vfs: In d_path don't call d_dname on a mount point
      fork:  Allow CLONE_PARENT after setns(CLONE_NEWPID)
      vfs: Fix a regression in mounting proc

 fs/dcache.c    |    7 ++++++-
 fs/namespace.c |    2 +-
 kernel/fork.c  |    2 +-
 3 files changed, 8 insertions(+), 3 deletions(-)


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