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 <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 5b2b07b..8b30cdf 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -755,6 +755,13 @@
/* 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;