[RFC] libxfs kernel infrastructure (was [XFS updates] XFS development tree branch, xfs-libxfs-in-kernel-RFC, created. xfs-for-linus-3.15-rc2-52-g6579dd8)

[Christoph Hellwig]

Getting rid of the need for xfs_mount.h in xfs_ialloc.h xfs_da_format.h
should be simple:

 - inline xfs_make_iptr into the only caller
 - move xfs_icluster_size_fsb to xfs_ialloc.c and just provide a
   prototype for it.
 - the various conversion routines for the directory blocks really
   shouldn't be in xfs_da_format.h anyway as they don't define the
   format.  Just have some other header that requires a version of
   xfs_mount included first.