Re: [PATCH -next] mm/vmscan: fix an undefined behavior for zone id

[Chris Down <chris@xxxxxxxxxxxxxx>]

Chris Down writes:
> Ah, I just saw this in my local checkout and thought it was from my 
> changes, until I saw it's also on clean mmots checkout. Thanks for the 
> fixup!

Also, does this mean we should change callers that may pass through 
zone_idx=MAX_NR_ZONES to become MAX_NR_ZONES-1 in a separate commit, then 
remove this interim fixup? I'm worried otherwise we might paper over real 
issues in future.