bsd/kern/uipc_mbuf.c

358  * chunks; the available chunks are chained in the slab's freelist (sl_head).
387 	void		*sl_head;	/* first free buffer */
1617 	buf = sp->sl_head;
1621 		sp->sl_head = buf->obj_next;
1622 		VERIFY(sp->sl_head != NULL || sp->sl_refcnt == (NMBPBG - 1));
1624 		sp->sl_head = buf->obj_next;
1625 		VERIFY(sp->sl_head != NULL || sp->sl_refcnt == (NCLPBG - 1));
1627 		sp->sl_head = NULL;
1629 	if (sp->sl_head != NULL && !slab_inrange(sp, sp->sl_head)) {
1630 		slab_nextptr_panic(sp, sp->sl_head);
1631 		/* In case sl_head is in the map but not in the slab */
1632 		VERIFY(slab_inrange(sp, sp->sl_head));
1655 		VERIFY(sp->sl_refcnt < NCLPBG || sp->sl_head == NULL);
1663 		    sp->sl_len == m_maxsize(class) && sp->sl_head == NULL);
1670 		    sp->sl_len == m_maxsize(class) && sp->sl_head == NULL);
1686 			    nsp->sl_head == NULL);
1706 		VERIFY(sp->sl_refcnt < NMBPBG || sp->sl_head == NULL);
1710 	if (sp->sl_head == NULL) {
1748 		    (slab_is_detached(sp) && sp->sl_head == NULL));
1756 		    sp->sl_len == m_maxsize(class) && sp->sl_head == NULL);
1767 		    sp->sl_len == m_maxsize(class) && sp->sl_head == NULL);
1779 			    nsp->sl_head == NULL);
1792 		    (slab_is_detached(sp) && sp->sl_head == NULL));
1810 		buf->obj_next = sp->sl_head;
1818 		buf->obj_next = sp->sl_head;
1820 	sp->sl_head = buf;
1843 			struct mbuf *m = sp->sl_head;
1845 			sp->sl_head = m->m_next;
1848 		VERIFY(sp->sl_head == NULL);
1859 			    (caddr_t)sp->sl_head, m_maxsize(MC_BIGCL));
1881 			union mcluster *c = sp->sl_head;
1883 			sp->sl_head = c->mcl_next;
1886 		VERIFY(sp->sl_head == NULL);
1897 			    (caddr_t)sp->sl_head, m_maxsize(MC_BIGCL));
2931 		VERIFY(sp->sl_head == NULL);
2966 				m->m_next = sp->sl_head;
2967 				sp->sl_head = (void *)m++;
2974 				c->mcl_next = sp->sl_head;
2975 				sp->sl_head = (void *)c++;
6140 	sp->sl_head = head;