swp_pager_getswapspace
blk = swp_pager_getswapspace(object, 1);
(blk = swp_pager_getswapspace(object, n)) == SWAPBLK_NONE &&
static __inline swblk_t swp_pager_getswapspace(vm_object_t object, int npages);
while ((blk = swp_pager_getswapspace(object, n)) ==