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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-01-30 22:04:10 +0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-01-31 02:45:15 +0400 |
| commit | c489ee290bdbbace6bb63ebe6ebd4dd605819495 (patch) | |
| tree | f1d41c565e0860cbd474c1bf4cfde37420d76c66 | |
| parent | edd2e36fe8bd3cec4fa67e746d4c4a9246d0830e (diff) | |
| download | linux-c489ee290bdbbace6bb63ebe6ebd4dd605819495.tar.xz | |
NFSv4.1: Handle NFS4ERR_DELAY when resetting the NFSv4.1 session
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>
Cc: stable@vger.kernel.org
| -rw-r--r-- | fs/nfs/nfs4state.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index f72561ca6895..e61f68d5ef21 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -2018,8 +2018,18 @@ static int nfs4_reset_session(struct nfs_client *clp) nfs4_begin_drain_session(clp); cred = nfs4_get_exchange_id_cred(clp); status = nfs4_proc_destroy_session(clp->cl_session, cred); - if (status && status != -NFS4ERR_BADSESSION && - status != -NFS4ERR_DEADSESSION) { + switch (status) { + case 0: + case -NFS4ERR_BADSESSION: + case -NFS4ERR_DEADSESSION: + break; + case -NFS4ERR_BACK_CHAN_BUSY: + case -NFS4ERR_DELAY: + set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state); + status = 0; + ssleep(1); + goto out; + default: status = nfs4_recovery_handle_error(clp, status); goto out; } |