[PATCH] ubifs: make ubifs_[get|set]xattr atomic

[Richard Weinberger]

Am 30.07.2015 um 07:37 schrieb Dongsheng Yang:
> This commit make the ubifs_[get|set]xattr protected by ui_mutex,
> making xfstests/generic/037 passed.

Making a test pass is not a good patch description.
Please describe what needs protection and why. :-)

Thanks,
//richard