88 #define	MRU	hashp->bufhead.next
89 #define	LRU	hashp->bufhead.prev
91 #define MRU_INSERT(B)	BUF_INSERT((B), &hashp->bufhead)
105 	HTAB *hashp,  in __get_buf()  argument
126 		segment_ndx = addr & (hashp->SGSIZE - 1);  in __get_buf()
129 		segp = hashp->dir[addr >> hashp->SSHIFT];  in __get_buf()
133 		is_disk = is_disk_mask || !hashp->new_file;  in __get_buf()
137 		bp = newbuf(hashp, addr, prev_bp);  in __get_buf()
139 		    __get_page(hashp, bp->page, addr, !prev_bp, is_disk, 0))  in __get_buf()
158 newbuf(HTAB *hashp, uint32_t addr, BUFHEAD *prev_bp)  in newbuf()  argument
173 	if (hashp->nbufs || (bp->flags & BUF_PIN)) {  in newbuf()
177 		if ((bp->page = calloc(1, (size_t)hashp->BSIZE)) == NULL) {  in newbuf()
181 		if (hashp->nbufs)  in newbuf()
182 			hashp->nbufs--;  in newbuf()
198 			if ((bp->flags & BUF_MOD) && __put_page(hashp, bp->page,  in newbuf()
210 				segment_ndx = bp->addr & (hashp->SGSIZE - 1);  in newbuf()
211 				segp = hashp->dir[bp->addr >> hashp->SSHIFT];  in newbuf()
214 				if (hashp->new_file &&  in newbuf()
240 				if ((xbp->flags & BUF_MOD) && __put_page(hashp,  in newbuf()
277 __buf_init(HTAB *hashp, u_int nbytes)  in __buf_init()  argument
282 	bfp = &(hashp->bufhead);  in __buf_init()
283 	npages = (unsigned int)(nbytes + hashp->BSIZE - 1) >> hashp->BSHIFT;  in __buf_init()
286 	hashp->nbufs = npages;  in __buf_init()
300 __buf_free(HTAB *hashp, int do_free, int to_disk)  in __buf_free()  argument
307 	for (bp = LRU; bp != &hashp->bufhead;) {  in __buf_free()
311 			    __put_page(hashp, bp->page,  in __buf_free()
318 				(void)memset(bp->page, 0, (size_t)hashp->BSIZE);  in __buf_free()
331 __reclaim_buf(HTAB *hashp, BUFHEAD *bp)  in __reclaim_buf()  argument