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Retry operation on EREMOTEIO on an interrupted slot

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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 <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Olga Kornievskaia 2016-09-23 17:24:03 -04:00 committed by Anna Schumaker
parent bfc505ded0
commit a865880e20
1 changed files with 7 additions and 0 deletions
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7
fs/nfs/nfs4proc.c
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@ -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;