282ad434a8
On Windows we can only do mmap memory allocation up to 4 GB, which causes a crash when doing very large renders on 64 bit systems with a lot of memory. As far as I can tell the reason to use mmap is to get around address space limitation on some 32 bit operating systems, and I can't see a reason to use it on 64 bit. For the original explanation see here: http://orange.blender.org/blog/stupid-memory-problems Fixes T37841.