linux-kernel - Re: [PATCH] slab+slob: dup name string

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Message-ID: <4FBE243F.3080002@parallels.com>
Date:	Thu, 24 May 2012 16:06:23 +0400
From:	Glauber Costa <glommer@...allels.com>
To:	Dave Chinner <david@...morbit.com>
CC:	Christoph Lameter <cl@...ux.com>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	David Rientjes <rientjes@...gle.com>,
	<linux-kernel@...r.kernel.org>, <cgroups@...r.kernel.org>,
	<linux-mm@...ck.org>, Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH] slab+slob: dup name string

On 05/24/2012 04:18 AM, Dave Chinner wrote:
>> Of course reasoning about why it was added helps (so let's try to
>> >  determine that), but so far the only reasonably strong argument in
>> >  favor of keeping it was robustness.
> I'm pretty sure it was added because there are slab names
> constructed by snprintf on a stack buffer, so the name doesn't exist
> beyond the slab initialisation function call...
>
> Cheers,
>
> Dave.
If that was the reason, we'd be seeing slab failing miserably where slub 
succeeds, since slab keeps no copy.


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