From 21b874c873b5019db8bb4b4f6aa929c4bac0a398 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Mon, 31 Aug 2015 01:19:22 -0700
Subject: [PATCH] NFSv4.1/pnfs: Handle LAYOUTGET return values correctly

According to RFC5661 section 18.43.3, if the server cannot satisfy
the loga_minlength argument to LAYOUTGET, there are 2 cases:
1) If loga_minlength == 0, it returns NFS4ERR_LAYOUTTRYLATER
2) If loga_minlength != 0, it returns NFS4ERR_BADLAYOUT

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