From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Wed, 30 Jan 2013 18:04:10 +0000 (-0500)
Subject: NFSv4.1: Handle NFS4ERR_DELAY when resetting the NFSv4.1 session
X-Git-Tag: v3.2.38~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=78e3ae2d57c0df313b079a07f6ffc16e4041e56c;p=pandora-kernel.git

NFSv4.1: Handle NFS4ERR_DELAY when resetting the NFSv4.1 session

commit c489ee290bdbbace6bb63ebe6ebd4dd605819495 upstream.

NFS4ERR_DELAY is a legal reply when we call DESTROY_SESSION. It
usually means that the server is busy handling an unfinished RPC
request. Just sleep for a second and then retry.
We also need to be able to handle the NFS4ERR_BACK_CHAN_BUSY return
value. If the NFS server has outstanding callbacks, we just want to
similarly sleep & retry.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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