tree be34cc170cce1e103baec1976f7903528eb4ff4d
parent b8e5c4c2978fa666287525a9de2fa648a7581262
author Trond Myklebust <Trond.Myklebust@netapp.com> 1129670421 -0700
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1129670421 -0700

NFSv4: Ensure that we recover from the OPEN + OPEN_CONFIRM BAD_STATEID race

 If the server is in the unconfirmed OPEN state for a given open owner
 and receives a second OPEN for the same open owner, it will cancel the
 state of the first request and set up an OPEN_CONFIRM for the second.

 This can cause a race that is discussed in rfc3530 on page 181.

 The following patch allows the client to recover by retrying the
 original open request.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>