mmap syscall not being traced.

[thecrogers]

Bpfink is tracing several system calls to trace file write events.

The currently covered system calls cover the majority of normal file write events.

However if a file is modified with mmap. The file can be modified without being caught by bpfink. So long as the file size does not change. As a change in file size requires a write syscall which would be caught by bpfink.