_vmem_alloc
if ((slab = _vmem_alloc(ri, slab_size)) != NULL)
slab = _vmem_alloc(ri, slab_size);
slab = _vmem_alloc(ri, slab_size);
addr = _vmem_alloc(ri, slab_size);
static void *_vmem_alloc(int ri, size_t slab_size);
*memptr = _vmem_alloc(size, alignment, 0);
chunk = _vmem_alloc(size, PAGE_SIZE, flags);
z = _vmem_alloc(ZoneSize, ZoneSize, flags);
static void *_vmem_alloc(size_t bytes, size_t align, int flags);