570183612189f5dcc4f7a613cd13da43d652b4cf
It _looks_ as if, back when we used to retry unsuccessful calls to umount, this would have inflated the effective timeout. Multiplying it by RETRY_UMOUNT_MAX. Which is set to 32. I'm surprised if it's true: I would have expected it to be noticed during the work on NFS timeouts. But I can't see what would have stopped it. Clarify that I do not expect this to happen anymore. I think each individual umount call is allowed up to the full timeout, but if umount ever exited with a signal status, we would stop retrying. To be extra clear, make sure that we do not retry in the event that umount perversely returned EXIT_SUCCESS after receiving SIGTERM.
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