Re: [linux-pm] [PATCH 0/8] Suspend block api (version 6)

From: Daniel Walker
Date: Thu May 13 2010 - 14:26:25 EST


On Thu, 2010-05-13 at 11:17 -0700, Brian Swetland wrote:

>
> I'm not sure this necessitates using only debugfs for the userspace
> interface. A userspace interface is necessary to accomplish what
> we're trying to do here, otherwise we have only half a solution, and
> our hope is that it'd be a stable interface (as userspace interfaces
> are supposed to be) for as long as its needed. I could totally
> imagine the userspace interface eventually becoming a no-op or
> punching through to some other facility, depending on how this problem
> is solved long-term in the ideal post-suspend-block future.

The problem is that once this userspace interface is exposed, it's
nearly permanent and has to be support for a long long time .. It might
seen trivial to just remove something your not using, but we never know
who is using what once the kernel is released.

Daniel

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