Re: [v2.6.26] what's brewing in x86.git for v2.6.26

From: Pekka Enberg
Date: Thu Apr 17 2008 - 06:41:36 EST


Hi Andrew,

On Thu, Apr 17, 2008 at 1:33 PM, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> Thank you whoever wrote kmemcheck.txt

That would be Vegard.

On Thu, Apr 17, 2008 at 1:33 PM, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> How come slub uses one byte to track the status of each byte when it could
> use a single bit?

Single bit is not enough as we track use after free as well (after
we've added delayed freeing to the beast).

On Thu, Apr 17, 2008 at 1:33 PM, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> We (still!) have not made the decision whether to proceed with slab or
> slub. How hard would it be to port kmemcheck into slab?

Not hard.
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