Re: [PATCH] slab: Ignore internal flags in cache creation

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On Thu, 27 Sep 2012, Christoph Lameter wrote:

> > > > Nack, this is already handled by CREATE_MASK in the mm/slab.c allocator;
> > >
> > > CREATE_MASK defines legal flags that can be specified. Other flags cause
> > > and error. This is about flags that are internal that should be ignored
> > > when specified.
> > >
> >
> > That should be ignored for the mm/slab.c allocator, yes.
> 
> Then you are ok with the patch as is?
> 

No, it's implementation defined so it shouldn't be in kmem_cache_create(), 
it should be in __kmem_cache_create().

> There *are* multiple slab allocators using those bits! And this works for
> them. There is nothing too restrictive here. The internal flags are
> standardized by this patch to be in the highest nibble.
> 

I'm referring to additional slab allocators that will be proposed for 
inclusion shortly.

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