MFi386: r274398

  Move NFS and TFTP filesystems before the synthetic filesystems (bzip,
  gzip, and split).


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274537 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
When doing busdma sync ops for BUSDMA_COHERENT memory, there is no need
for cache maintenance operations, but ensure that all prior writes have
reached memory when doing a PREWRITE sync.

Submitted by:	Michal Meloun <meloun@miracle.cz>


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274538 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f