James, in a change over three years ago, you added implicit aligning to __get_vm_area() for VM_IOREMAP requests. I wonder, though, whether it was intentional to over-align requests of sizes that are an exact power of two (and between PAGE_SIZE and (1 << IOREMAP_MAX_ORDER)). I would think that the argument of fls() should be (size - 1) rather than size.
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