nfsd: move some blocklayout code

Trivial reorganization, no change in behavior.  Move some code around,
pull some code out of block layoutcommit that will be useful for the
scsi layout.

[bfields@redhat.com: split off from "nfsd: add SCSI layout support"]
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Christoph Hellwig 2016-03-04 20:46:17 +01:00 • committed by J. Bruce Fields
commit 368248eeb1