Re: [PATCH] fs: fcntl_setlease defies lease_init assumptions

[Christoph Lameter]

On Mon, 8 May 2006, Pekka Enberg wrote:

> > I think it sounds like it's worth it, but I'm not going to really push it.
> 
> Sounds good to me. Andrew?

virt_to_page is not cheap on NUMA.

On IA64 virt_to_page is:

#define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

# define pfn_to_page(pfn)       (vmem_map + (pfn))

vmem_map is not a linear map but a virtual mapping that may require 
several faults to get the information.

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