On 12/06/2017 09:06 AM, John Hubbard wrote:

On 12/05/2017 11:35 PM, Florian Weimer wrote:

quoted

On 12/06/2017 08:33 AM, John Hubbard wrote:

quoted

In that case, maybe:

      MAP_EXACT

? ...because that's the characteristic behavior.

Is that true?  mmap still silently rounding up the length to the page size, I assume, so even that name is misleading.

Hi Florian,

Not as far as I can tell, it's not doing that.

For both MAP_FIXED, and this new flag, the documented (and actual)
behavior is *not* to do any such rounding. Instead, the requested
input address is required to be page-aligned itself, and mmap()
should be honoring the exact addr.

I meant the length, not the address.

Florian