[PATCH 5.4 302/389] NFSv4.1: Dont decrease the value of seq_nr_highest_sent

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From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>

commit f07a5d2427fc113dc50c5c818eba8929bc27b8ca upstream.

When we're trying to figure out what the server may or may not have seen
in terms of request numbers, do not assume that requests with a larger
number were missed, just because we saw a reply to a request with a
smaller number.

Fixes: 3453d5708b33 ("NFSv4.1: Avoid false retries when RPC calls are interrupted")
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/nfs/nfs4proc.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -779,10 +779,9 @@ static void nfs4_slot_sequence_record_se
 	if ((s32)(seqnr - slot->seq_nr_highest_sent) > 0)
 		slot->seq_nr_highest_sent = seqnr;
 }
-static void nfs4_slot_sequence_acked(struct nfs4_slot *slot,
-		u32 seqnr)
+static void nfs4_slot_sequence_acked(struct nfs4_slot *slot, u32 seqnr)
 {
-	slot->seq_nr_highest_sent = seqnr;
+	nfs4_slot_sequence_record_sent(slot, seqnr);
 	slot->seq_nr_last_acked = seqnr;
 }
 





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