From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Sun, 5 Jul 2015 19:26:58 +0000 (-0400)
Subject: NFSv4.1: Handle SEQ4_STATUS_BACKCHANNEL_FAULT correctly
X-Git-Tag: omap-for-v4.3/fixes-merge-window~179^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b13529059cf782f9b4e4ac0ca9d524bd922163da;p=pandora-kernel.git

NFSv4.1: Handle SEQ4_STATUS_BACKCHANNEL_FAULT correctly

RFC5661 states:

      The server has encountered an unrecoverable fault with the
      backchannel (e.g., it has lost track of the sequence ID for a slot
      in the backchannel).  The client MUST stop sending more requests
      on the session's fore channel, wait for all outstanding requests
      to complete on the fore and back channel, and then destroy the
      session.

Ensure we do so...

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