Spose so. One always suspects that adding a typecast is a sign that we
screwed things up somehow. The relationship between enums lru_list and
node_stat_item is foggy, and I'm unsure whether this is the place to
make the transition it. Perhaps lru_list_name() should take an
`unsigned int' arg instead.
All of these *_name() functions do seem to expect arguments in range of
the corresponding enums, so perhaps keep those args typed as a form of
self-documenting code, and do this instead?
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