Function vm_page_alloc_contig

freebsd/vm/vm_page.c:2237–2255

* vm_page_alloc_contig: * * Allocate a contiguous set of physical pages of the given size "npages" * from the free lists. All of the physical pages must be at or above * the given physical address "low" and below the given physical address * "high". The given value "alignment" determines the alignment of the * first physical page in the set. If the given value "boundary" is * non-zero, t

 *	VM_ALLOC_ZERO		prefer a zeroed page
 */
vm_page_t
vm_page_alloc_contig(vm_object_t object, vm_pindex_t pindex, int req,
    u_long npages, vm_paddr_t low, vm_paddr_t high, u_long alignment,
    vm_paddr_t boundary, vm_memattr_t memattr)
{
	struct vm_domainset_iter di;
	vm_page_t m;
	int domain;

	vm_domainset_iter_page_init(&di, object, pindex, &domain, &req);
	do {
		m = vm_page_alloc_contig_domain(object, pindex, domain, req,
		    npages, low, high, alignment, boundary, memattr);
		if (m != NULL)
			break;
	} while (vm_domainset_iter_page(&di, object, &domain) == 0);

	return (m);
}

vm_page_t
vm_page_alloc_contig_domain(vm_object_t object, vm_pindex_t pindex, int domain,