Re: [PATCH v2 3/7] mm/memory_hotplug: prepare passing flags to add_memory() and friends

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On Tue, Sep 08, 2020 at 10:10:08PM +0200, David Hildenbrand wrote:
> We soon want to pass flags, e.g., to mark added System RAM resources.
> mergeable. Prepare for that.

What are these random "flags", and how do we know what should be passed
to them?

Why not make this an enumerated type so that we know it all works
properly, like the GPF_* flags are?  Passing around a random unsigned
long feels very odd/broken...

thanks,

greg k-h



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