From a865880e20ca4d2df362f61c9ef51f0fc0273131 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Fri, 23 Sep 2016 17:24:03 -0400 Subject: [PATCH] Retry operation on EREMOTEIO on an interrupted slot If an operation got interrupted, then since we don't know if the server processed it on not, we keep the seq#. Upon reuse of slot and seq# if we get reply from the cache (ie EREMOTEIO) then we need to retry the operation after bumping the seq# Signed-off-by: Olga Kornievskaia Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 5b2b07bca490..8b30cdf41848 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -755,6 +755,13 @@ static int nfs41_sequence_process(struct rpc_task *task, /* Check the SEQUENCE operation status */ switch (res->sr_status) { case 0: + /* If previous op on slot was interrupted and we reused + * the seq# and got a reply from the cache, then retry + */ + if (task->tk_status == -EREMOTEIO && interrupted) { + ++slot->seq_nr; + goto retry_nowait; + } /* Update the slot's sequence and clientid lease timer */ slot->seq_done = 1; clp = session->clp; -- 2.20.1