pNFS: Allow layout drivers to manage private data in struct nfs4_layoutreturn

Cleanup to allow layout drivers to attach private data to layoutreturn,
and manage the data.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-09-23 11:38:08 -04:00
commit 4d796d751c
4 changed files with 12 additions and 1 deletions