735 vnode_pager_getpages(vm_object_t object, vm_page_t *m, int count, int *rbehind,  in vnode_pager_getpages()  argument
743 	rtval = VOP_GETPAGES(vp, m, count, rbehind, rahead);  in vnode_pager_getpages()
751     int *rbehind, int *rahead, vop_getpages_iodone_t iodone, void *arg)  in vnode_pager_getpages_async()  argument
757 	rtval = VOP_GETPAGES_ASYNC(vp, m, count, rbehind, rahead, iodone, arg);  in vnode_pager_getpages_async()
804 	int error, before, after, rbehind, rahead, poff, i;  in vnode_pager_generic_getpages()  local
910 	rbehind = a_rbehind ? *a_rbehind : 0;  in vnode_pager_generic_getpages()
912 	rbehind = min(rbehind, before);  in vnode_pager_generic_getpages()
913 	rbehind = min(rbehind, m[0]->pindex);  in vnode_pager_generic_getpages()
920 	if (rbehind + rahead + count > atop(maxphys)) {  in vnode_pager_generic_getpages()
923 		trim = rbehind + rahead + count - atop(maxphys) + 1;  in vnode_pager_generic_getpages()
924 		sum = rbehind + rahead;  in vnode_pager_generic_getpages()
925 		if (rbehind == before) {  in vnode_pager_generic_getpages()
927 			rbehind -= roundup(trim * rbehind / sum, pagesperblock);  in vnode_pager_generic_getpages()
928 			if (rbehind < 0)  in vnode_pager_generic_getpages()
929 				rbehind = 0;  in vnode_pager_generic_getpages()
931 			rbehind -= trim * rbehind / sum;  in vnode_pager_generic_getpages()
934 	KASSERT(rbehind + rahead + count <= atop(maxphys),  in vnode_pager_generic_getpages()
936 	    rbehind, rahead, count, maxphys));  in vnode_pager_generic_getpages()
946 	if (rbehind) {  in vnode_pager_generic_getpages()
951 		startpindex = m[0]->pindex - rbehind;  in vnode_pager_generic_getpages()