What were you trying to do that didn't work?

man mount.cifs states for echo_interval:

The reconnection happens at twice the value of the echo_interval set for an unresponsive server.

In reality, after upstream commitf 2caf901c1b7 (present in RHEL-8.2 or newer - i.e. always present in RHEL-9), the kernel uses echo_interval as:

time_after(jiffies, server->lstrp + 3 * server->echo_interval)

i.e. the reconnection happens at 3 * echo_interval for an unresponsive kernel

What is the impact of this issue to you?

Inaccurate man page - can cause confusion when reviewing logs or trying to setup values to match timeouts

Please provide the package NVR for which the bug is seen:

cifs-utils-7.0-5.el9

How reproducible is this bug?:

Always

Steps to reproduce

1. man mount.cifs
2. find the description of echo_interval

Expected results

The reconnection happens at 3 times the value of echo_interval set for an unresponsive server.

Actual results

The reconnection happens at twice the value of the  echo_interval set for an unresponsive server.