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Code that is intended to run in an operating system kernel or kernel module

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Generating bounded & unique random numbers in the Linux kernel

I recently needed to generate a series of unique random numbers (non-repeated) within a bounded range inside of the Linux kernel. The code I came up with is below. … I'd appreciate any feedback -- again, please keep in mind that it's within the Linux kernel, so the standard C library is out of the question. …
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