RE: [PATCH 2/6] idr: remove MAX_IDR_MASK and move left MAX_IDR_*into idr.c

[Hefty, Sean]

> So, if you want a cyclic allocation, the allocation should be tried in
> [start, END) and then [0, start); otherwise, after the allocation
> wraps for the first time, as the closer the starting point gets to
> END, the chance of not finding a vacant slot in [start, END) goes
> higher.  When @start equals END - 1 for the second time, if the first
> END - 1 allocation is still around, you'll get -ENOSPC.

Got it - thanks.  I'll make a note to fix this.
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