Issues with UBIFS xattr support

[Tim]

I found that UBIFS does not fully support xattr manipulation.

I use security context files labeling (in SELinux) that heavily relies
on proper manipulation of xattr by the filesystem.
And issues are:
- ubifs does not store xattr in inode for symbolic link files;
- if new file is created on ubifs, xattr should be automatically
updated with security context label, but it does not.

Maybe there is a patch that fixes those issues already?

Kindest regards,
Tim