commit dc602dd706cb64036132a7903ead1c67d9a7bcb9
author Trond Myklebust <trond.myklebust@primarydata.com> Thu Dec 31 11:44:06 2015 -0500
committer Trond Myklebust <trond.myklebust@primarydata.com> Thu Dec 31 13:50:42 2015 -0500
tree 88d632825b446b8445a0219c3ac24a00a1d2853b
parent e07db907eb80525874b7707c62cc6f5e975ef130

NFS/pNFS: Fix up pNFS write reschedule layering violations and bugs

The flexfiles layout in particular, seems to want to poke around in the
O_DIRECT flags when retransmitting.
This patch sets up an interface to allow it to call back into O_DIRECT
to handle retransmission correctly. It also fixes a potential bug whereby
we could change the behaviour of O_DIRECT if an error is already pending.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>