On Wed, 24 Feb 2010, Auguste Mome wrote: > I'd like to use kmem_cache() system, but need the memory taken from a > specific range if requested, outside the range otherwise. > I think about adding new zone and define new GFP flag to either select or > ignore the zone. Does it sound possible? Then I welcome any hint if you know > where to add the appropriated test in allocator, how to attach the > region to the new zone id). > > Or slab/slub system is not designed for this, I should forget it and > opt for another system? > No slab allocator is going to be designed for that other than SLAB_DMA to allocate from lowmem. If you don't have need for lowmem, why do you need memory only from a certain range? I can imagine it would have a usecase for memory hotplug to avoid allocating slab that cannot be reclaimed on certain nodes, but ZONE_MOVABLE seems more appropriate to guarantee such migration properties. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>