Re: [PATCH 2/2] mm: restrict access to /proc/meminfo

From: Dave Hansen
Date: Wed Sep 28 2011 - 16:33:53 EST


On Tue, 2011-09-27 at 15:47 -0500, Christoph Lameter wrote:
> On Tue, 27 Sep 2011, David Rientjes wrote:
> > It'll turn into another one of our infinite number of capabilities. Does
> > anything actually care about statistics at KB granularity these days?
>
> Changing that to MB may also break things. It may be better to have
> consistent system for access control to memory management counters that
> are not related to a process.

We could also just _effectively_ make it output in MB:

foo = foo & ~(1<<20)

or align-up. We could also give the imprecise numbers to unprivileged
users and let privileged ones see the page-level ones.

-- Dave

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