Re: suspend2 merge (was Re: [Suspend2-devel] Re: CFS and suspend2: hang in atomic copy)

Chuck Ebbert
2007-04-25T22:48:32Z

Linus Torvalds wrote:
> Tell me, what does "suspend" do, and what does "freeze" (snapshot) do?
>
> And name *one* thing that have in common.
>
> I'll tell you: Nada. Zero. Zilch. Nothing.
>
> "Freeze" for a disk is a total no-op. There is no DMA, there is no
> nothing. In contrast, "suspend" for a disk is a totally valid operation.
>

Freeze is a subset of suspend, isn't it? (It might be an empty subset
in some cases.)