linux-kernel - Re: SLUB: Return ZERO_SIZE

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Message-ID: <84144f020706040922v56cb10eg5a730b4abe9d5251@mail.gmail.com>
Date:	Mon, 4 Jun 2007 19:22:03 +0300
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Christoph Lameter" <clameter@....com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	jeremy@...p.org
Subject: Re: SLUB: Return ZERO_SIZE_PTR for kmalloc(0)

On 6/4/07, Christoph Lameter <clameter@....com> wrote:
> We are doing that right now. The problem is that people keep storing stuff
> in memory allocated with kmalloc(0).

Ok, makes sense. I guess I might as well throw my suggestion in the
mix. Lets create a new kmalloc cache for zero-length objects where
object size is zero but there are regular red-zones on both sides.
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