linux-kernel - Re: [rfc 0/2] Introducing VmFlags field into smaps output

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Message-ID: <20121022205641.GL2303@moon>
Date:	Tue, 23 Oct 2012 00:56:41 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Pavel Emelyanov <xemul@...allels.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [rfc 0/2] Introducing VmFlags field into smaps output

On Tue, Oct 23, 2012 at 12:50:48AM +0400, Pavel Emelyanov wrote:
> On 10/22/2012 11:29 PM, Andrew Morton wrote:
> > On Mon, 22 Oct 2012 23:14:52 +0400
> > Cyrill Gorcunov <gorcunov@...nvz.org> wrote:
> > 
> >> Hi guys, during c/r sessions we've found that there is no way at
> >> the moment to fetch some VMA associated flags, such as mlock()
> >> and madvise(), thus the patches in this series intorduce new field
> >> into "smaps" output called VmFlags where all flags associated with
> >> the particular VMA is shown in two letter mnemonic.
> >>
> >> Strictly speaking for c/r we only need mlock/madvise bits but it
> >> has been said that providing just a few flags looks somehow inconsistent.
> >> So all flags are here now.
> >>
> >> Please review. Comments and complains are quite welcome!
> > 
> > Sigh, it's still a pretty nasty-looking interface.  Better ideas are
> > welcomed.
> 
> Maybe just a string of two-letter short names like
> 
> VmFlags: rd wr sh sr
> 
> ?
> 
> I.e. in a way flags line looks in cpuinfo file.

Yup, I think this will be shorter and more agreeable.
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