linux-kernel - Re: [PATCH v1 00/10] vfs: getname/putname overhaul

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Date:	Sat, 8 Sep 2012 05:08:50 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Jeff Layton <jlayton@...hat.com>
Cc:	Andi Kleen <andi@...stfloor.org>, viro@...iv.linux.org.uk,
	eparis@...hat.com, linux-audit@...hat.com,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 00/10] vfs: getname/putname overhaul

On Fri, Sep 07, 2012 at 08:54:18PM -0400, Jeff Layton wrote:
> On Fri, 07 Sep 2012 14:26:56 -0700
> Andi Kleen <andi@...stfloor.org> wrote:
> 
> > Jeff Layton <jlayton@...hat.com> writes:
> > 
> > > This patchset is a first pass at overhauling the getname/putname
> > > interface to use a struct. The idea here is to add a new getname_info
> > > struct that allow us to pass around some auxillary info along with
> > > the string that getname() returns.
> > 
> > Couldn't you just use some of the free pointers in struct page?
> > (lru etc.)
> > 
> > -Andi
> > 
> 
> We could do that if these were page allocations. They're not, however.
> __getname() does a PATH_MAX size allocation out of a slabcache. I get

Ok I suppose slab is faster. In this case it's better to track
separately I agree.

-Andi
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