linux-kernel - Re: SLUB sysfs support

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Message-ID: <20071227235804.GJ27894@ZenIV.linux.org.uk>
Date:	Thu, 27 Dec 2007 23:58:04 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Christoph Lameter <clameter@....com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: SLUB sysfs support

On Thu, Dec 27, 2007 at 03:53:43PM -0800, Christoph Lameter wrote:
> On Thu, 27 Dec 2007, Christoph Lameter wrote:
> 
> > > a) remove symlink when slab goes away
> > 
> > Ok. Need to think about how to code that.
> 
> How do I iterate over all symlinks in /sys/kernel/slab/*?
> 
> I remember trying to do it before and not being able to find a sysfs 
> method for that.

What the hell do you need that for?  You have an obvious moment when
/sys/kernel/slab/cache_name -> <whatever> should be gone - it's when
you remove the slab called cache_name.  And at that point you don't
need to iterate over anything - you have the exact name, for fsck sake...

Why would you want these symlinks to stick around for longer than that?
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