When reading /proc/sys/kernel/random/write_wakeup_threshold on various Linux systems I get different values. So I assume its default value is not generic but might depend on the Linux distribution, kernel version or some dynamic factors. I searched the Linux kernel's source code but couldn't find code which defines that value. Where is the default value of write_wakeup_threshold defined, what is the logic behind it, and is there an overall default value?

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