tree 9ab4dc58398a5ef08b174871a9cc587680261b65
parent eb6d38d5427b3ad42f5268da0f1dd31bb0af1264
author Eric W. Biederman <ebiederm@xmission.com> 1431551369 -0500
committer Eric W. Biederman <ebiederm@xmission.com> 1435765003 -0500

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>