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Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 6)
From: Daniel Walker <dwalker@fifo99.com>
To: Brian Swetland <swetland@google.com>
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Date: Thu, 13 May 2010 11:25:57 -0700
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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