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SUNRPC dont update timeout value on connection reset 

Current behaviour: every time a v3 operation is re-sent to the server
we update (double) the timeout. There is no distinction between whether
or not the previous timer had expired before the re-sent happened.

Here's the scenario:
1. Client sends a v3 operation
2. Server RST-s the connection (prior to the timeout) (eg., connection
is immediately reset)
3. Client re-sends a v3 operation but the timeout is now 120sec.

As a result, an application sees 2mins pause before a retry in case
server again does not reply. Where as if a connection reset didn't
change the timeout value, the client would have re-tried (the 3rd
time) after 60secs.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Olga Kornievskaia 2020-06-23 11:24:09 -04:00 committed by Anna Schumaker
parent 82c596ebaa
commit 88428cc4ae
1 changed files with 2 additions and 1 deletions
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1
net/sunrpc/clnt.c
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@ -2405,6 +2405,7 @@ call_status(struct rpc_task *task)
goto out_exit;
}
task->tk_action = call_encode;
if (status != -ECONNRESET && status != -ECONNABORTED)
rpc_check_timeout(task);
return;
out_exit: