Re: Why don't we make mmap MAP_SHARED with /dev/zero possible?

Benjamin C.R. LaHaise
1999-11-03T19:32:54Z

On Wed, 3 Nov 1999, Ingo Molnar wrote:

> it's now an unconditional __GFP_HIGHMEM in my tree. HIGHMEM gfp()
> allocation automatically falls back to allocate in lowmem, if highmem
> lists are empty.

I'd like to look through the patches to see how you're doing things before
making any comments. Specifically, I want to look at the buffer head
address thing that was mentioned -- given that the devices that support
addressing memory above 4G will expect a 64 bit address, I don't think the
shift is the right way to go.

-ben