Re: [RFC] Hugetlb demotion for x86

From: Christoph Hellwig
Date: Wed May 10 2006 - 16:04:50 EST


On Wed, May 10, 2006 at 01:56:40PM -0500, Adam Litke wrote:
> The following patch enables demotion of MAP_PRIVATE hugetlb memory to
> normal anonymous memory on the i386 architecture.

This is an awfully bad idea. Applications should do smart fallback
instead. For the same reason we for example fail O_DIRECT requests
we can fullfill instead of doing the half buffered I/O braindamage
solaris does.

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