From: Eric W. Biederman <ebiederm@xmission.com>
Date: Wed, 13 May 2015 21:09:29 +0000 (-0500)
Subject: kernfs: Add support for always empty directories.
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~48^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea015218f2f7ace2dad9cedd21ed95bdba2886d7;p=pandora-kernel.git

kernfs: Add support for always empty directories.

Add a new function kernfs_create_empty_dir that can be used to create
directory that can not be modified.

Update the code to use make_empty_dir_inode when reporting a
permanently empty directory to the vfs.

Update the code to not allow adding to permanently empty directories.

Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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