920da7e4d2
add support for object types that were previously prohibited because they could contain PG_CACHED pages. Roughly halve the number of radix trie operations performed by vm_page_alloc_contig() using the same approach that is employed by vm_page_alloc(). Also, eliminate the radix trie lookup performed with the free page queues lock held. Tidy up the handling of radix trie insert failures in vm_page_alloc() and vm_page_alloc_contig(). Reviewed by: kib, markj Tested by: pho Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D8878