Re: RFC: COW for hugepages

[Benjamin Herrenschmidt]

On Wed, 2004-04-07 at 17:53, Andrew Morton wrote:
> David Gibson <david@xxxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > Doing the COW for hugepages turns out not to be terribly difficult.
> >  Is there any reason not to apply this patch?
> 
> Not much, except that it adds stuff to the kernel.
> 
> Does anyone actually have a real-world need for the feature?

Yup, porting some apps to use hugepages, when those apps
rely on fork & cow semantics typically. Also, implicit use of
hugepages (usually via a malloc override library).

Ben.


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