[dm-devel] [PATCH] slab: introduce the flag SLAB_MINIMIZE_WASTE

[Christopher Lameter]

One other thought: If you want to improve the behavior for large scale
objects allocated through kmalloc/kmemcache then we would certainly be
glad to entertain those ideas.

F.e. you could optimize the allcations > 2x PAGE_SIZE so that they do not
allocate powers of two pages. It would be relatively easy to make
kmalloc_large round the allocation to the next page size and then allocate
N consecutive pages via alloc_pages_exact() and free the remainder unused
pages or some such thing.