tree 4920966a6d34ec9862eaa1410d591a54ee4e389e
parent 08f05c49749ee655bef921d12160960a273aad47
author Bryan Schumaker <bjschuma@netapp.com> 1351627595 -0400
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1351703608 -0400

NFS: Wait for session recovery to finish before returning

Currently, we will schedule session recovery and then return to the
caller of nfs4_handle_exception.  This works for most cases, but causes
a hang on the following test case:

	Client				Server
	------				------
	Open file over NFS v4.1
	Write to file
					Expire client
	Try to lock file

The server will return NFS4ERR_BADSESSION, prompting the client to
schedule recovery.  However, the client will continue placing lock
attempts and the open recovery never seems to be scheduled.  The
simplest solution is to wait for session recovery to run before retrying
the lock.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org