[PATCH 00/10] quotactl fixed and cleanups

[Christoph Hellwig]

This is a first large batch of refactoring the generic quotactl code.
I started looking at this for merging the FS interfaces for "VFS" and "XFS"
style quotas now that we grow more filesystems wanting to support quota
in a more advanced way than the generic implementation can, e.g. GFS2
and cifs.  There will be another couple of patches do do the actual
work which are not quite ready, but this is a large and useful enough batch
to get review and possibly included first.