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afs: Use the operation issue time instead of the reply time for callb…
…acks [ Upstream commit 7903192 ] rxrpc and kafs between them try to use the receive timestamp on the first data packet (ie. the one with sequence number 1) as a base from which to calculate the time at which callback promise and lock expiration occurs. However, we don't know how long it took for the server to send us the reply from it having completed the basic part of the operation - it might then, for instance, have to send a bunch of a callback breaks, depending on the particular operation. Fix this by using the time at which the operation is issued on the client as a base instead. That should never be longer than the server's idea of the expiry time. Fixes: 7810705 ("afs: Fix calculation of callback expiry time") Fixes: 2070a3e ("rxrpc: Allow the reply time to be obtained on a client call") Suggested-by: Jeffrey E Altman <jaltman@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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