103 	BUFHEAD *bp;  in __get_buf()  local
111 		bp = prev_bp->ovfl;  in __get_buf()
112 		if (!bp || (bp->addr != addr))  in __get_buf()
113 			bp = NULL;  in __get_buf()
125 		bp = PTROF(segp[segment_ndx]);  in __get_buf()
130 	if (!bp) {  in __get_buf()
131 		bp = newbuf(hashp, addr, prev_bp);  in __get_buf()
132 		if (!bp ||  in __get_buf()
133 		    __get_page(hashp, bp->page, addr, !prev_bp, is_disk, 0))  in __get_buf()
137 			    (BUFHEAD *)((intptr_t)bp | is_disk_mask);  in __get_buf()
139 		BUF_REMOVE(bp);  in __get_buf()
140 		MRU_INSERT(bp);  in __get_buf()
142 	return (bp);  in __get_buf()
154 	BUFHEAD *bp;		/* The buffer we're going to use */  in newbuf()  local
162 	bp = LRU;  in newbuf()
165         if (bp == hashp->cpage) {  in newbuf()
166                 BUF_REMOVE(bp);  in newbuf()
167                 MRU_INSERT(bp);  in newbuf()
168                 bp = LRU;  in newbuf()
172 	if (hashp->nbufs == 0 && prev_bp && bp->ovfl) {  in newbuf()
175 		for (ovfl = bp->ovfl; ovfl ; ovfl = ovfl->ovfl) {  in newbuf()
187 	if (hashp->nbufs || (bp->flags & BUF_PIN) || bp == hashp->cpage) {  in newbuf()
189 		if ((bp = (BUFHEAD *)calloc(1, sizeof(BUFHEAD))) == NULL)  in newbuf()
191 		if ((bp->page = (char *)calloc(1, hashp->BSIZE)) == NULL) {  in newbuf()
192 			free(bp);  in newbuf()
199 		BUF_REMOVE(bp);  in newbuf()
204 		if ((bp->addr != 0) || (bp->flags & BUF_BUCKET)) {  in newbuf()
209 			shortp = (u_int16_t *)bp->page;  in newbuf()
212 			if ((bp->flags & BUF_MOD) && __put_page(hashp, bp->page,  in newbuf()
213 			    bp->addr, (int)IS_BUCKET(bp->flags), 0))  in newbuf()
223 			if (IS_BUCKET(bp->flags)) {  in newbuf()
224 				segment_ndx = bp->addr & (hashp->SGSIZE - 1);  in newbuf()
225 				segp = hashp->dir[bp->addr >> hashp->SSHIFT];  in newbuf()
231 				    ((bp->flags & BUF_MOD) ||  in newbuf()
242 			for (xbp = bp; xbp->ovfl;) {  in newbuf()
268 	bp->addr = addr;  in newbuf()
271 	    bp->addr, (bp->ovfl ? bp->ovfl->addr : 0), 0);  in newbuf()
273 	bp->ovfl = NULL;  in newbuf()
282 		    (bp ? bp->addr : 0));  in newbuf()
284 		prev_bp->ovfl = bp;  in newbuf()
285 		bp->flags = 0;  in newbuf()
287 		bp->flags = BUF_BUCKET;  in newbuf()
288 	MRU_INSERT(bp);  in newbuf()
289 	return (bp);  in newbuf()
318 	BUFHEAD *bp;  in __buf_free()  local
323 	for (bp = LRU; bp != &hashp->bufhead;) {  in __buf_free()
325 		if (bp->addr || IS_BUCKET(bp->flags)) {  in __buf_free()
326 			if (to_disk && (bp->flags & BUF_MOD) &&  in __buf_free()
327 			    __put_page(hashp, bp->page,  in __buf_free()
328 			    bp->addr, IS_BUCKET(bp->flags), 0))  in __buf_free()
333 			if (bp->page) {  in __buf_free()
334 				(void)memset(bp->page, 0, hashp->BSIZE);  in __buf_free()
335 				free(bp->page);  in __buf_free()
337 			BUF_REMOVE(bp);  in __buf_free()
338 			free(bp);  in __buf_free()
339 			bp = LRU;  in __buf_free()
341 			bp = bp->prev;  in __buf_free()
347 __reclaim_buf(HTAB *hashp, BUFHEAD *bp)  in __reclaim_buf()  argument
349 	bp->ovfl = NULL;  in __reclaim_buf()
350 	bp->addr = 0;  in __reclaim_buf()
351 	bp->flags = 0;  in __reclaim_buf()
352 	BUF_REMOVE(bp);  in __reclaim_buf()
353 	LRU_INSERT(bp);  in __reclaim_buf()