[PATCH] x86/pat, mm: Make track_pfn_insert() return void

[Borislav Petkov]

On Mon, Oct 24, 2016 at 04:31:45PM +1000, Dave Airlie wrote:
> A recent change to the mm code in:
> 87744ab3832b83ba71b931f86f9cfdb000d07da5
> mm: fix cache mode tracking in vm_insert_mixed()

While we're at it, let's simplify that track_pfn_insert() thing:

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