Messages in this thread | | | Date | Thu, 14 Oct 2004 14:49:15 -0400 | From | Dave Jones <> | Subject | Re: [PATCH] General purpose zeroed page slab |
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On Thu, Oct 14, 2004 at 06:36:37PM +0100, Matthew Wilcox wrote: > On Thu, Oct 14, 2004 at 01:30:21PM -0400, Brian Gerst wrote: > > This doesn't work as you expect it does. The constructor is only called > > when a new slab is created, for each new object on the slab. It is > > _not_ run again when an object is freed. So if a page is freed then > > immediately reallocated it will contain garbage. > > The user is responsible for zeroing the page before handing it back to > the slab allocator.
That sounds like an accident waiting to happen. How about a CONFIG_DEBUG option to check its zeroed on free ?
Dave
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