3417 	xfs_extnum_t	lastx,		/* last extent index used */  in xfs_bmap_do_search_extents()  argument
3444 	if (lastx != NULLEXTNUM && lastx < nextents)  in xfs_bmap_do_search_extents()
3445 		ep = base + lastx;  in xfs_bmap_do_search_extents()
3453 	else if (ep && lastx < nextents - 1 &&  in xfs_bmap_do_search_extents()
3457 		lastx++;  in xfs_bmap_do_search_extents()
3465 		lastx = 0;  in xfs_bmap_do_search_extents()
3474 			lastx = (low + high) >> 1;  in xfs_bmap_do_search_extents()
3475 			ep = base + lastx;  in xfs_bmap_do_search_extents()
3479 				high = lastx - 1;  in xfs_bmap_do_search_extents()
3481 				low = lastx + 1;  in xfs_bmap_do_search_extents()
3486 				*lastxp = lastx;  in xfs_bmap_do_search_extents()
3492 			lastx++;  in xfs_bmap_do_search_extents()
3493 			if (lastx == nextents) {  in xfs_bmap_do_search_extents()
3516 	*lastxp = lastx;  in xfs_bmap_do_search_extents()
3540 	xfs_extnum_t    lastx;          /* last extent index used */  in xfs_bmap_search_extents()  local
3547 	lastx = ifp->if_lastex;  in xfs_bmap_search_extents()
3551 	ep = xfs_bmap_do_search_extents(base, lastx, nextents, bno, eofp,  in xfs_bmap_search_extents()
4179 	xfs_extnum_t	lastx;			/* last extent used */  in xfs_bmap_last_before()  local
4195 	ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,  in xfs_bmap_last_before()
4547 	xfs_extnum_t	lastx;		/* last useful extent number */  in xfs_bmapi()  local
4646 	ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,  in xfs_bmapi()
4676 				if (lastx != NULLEXTNUM && lastx) {  in xfs_bmapi()
4677 					ep = &ifp->if_u1.if_extents[lastx - 1];  in xfs_bmapi()
4856 			error = xfs_bmap_add_extent(ip, lastx, &cur, &got,  in xfs_bmapi()
4862 			lastx = ifp->if_lastex;  in xfs_bmapi()
4863 			ep = &ifp->if_u1.if_extents[lastx];  in xfs_bmapi()
4952 			error = xfs_bmap_add_extent(ip, lastx, &cur, mval,  in xfs_bmapi()
4958 			lastx = ifp->if_lastex;  in xfs_bmapi()
4959 			ep = &ifp->if_u1.if_extents[lastx];  in xfs_bmapi()
5016 		lastx++;  in xfs_bmapi()
5017 		if (lastx >= nextents) {  in xfs_bmapi()
5023 	ifp->if_lastex = lastx;  in xfs_bmapi()
5103 	xfs_extnum_t	lastx;		/* last useful extent number */  in xfs_bmapi_single()  local
5120 	(void)xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,  in xfs_bmapi_single()
5133 	ifp->if_lastex = lastx;  in xfs_bmapi_single()
5165 	xfs_extnum_t		lastx;		/* last extent index used */  in xfs_bunmapi()  local
5210 	ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,  in xfs_bunmapi()
5217 		ep = &ifp->if_u1.if_extents[--lastx];  in xfs_bunmapi()
5232 	while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 &&  in xfs_bunmapi()
5239 			if (--lastx < 0)  in xfs_bunmapi()
5287 					if (--lastx >= 0)  in xfs_bunmapi()
5308 			error = xfs_bmap_add_extent(ip, lastx, &cur, &del,  in xfs_bunmapi()
5336 					if (--lastx >= 0)  in xfs_bunmapi()
5347 				ASSERT(lastx > 0);  in xfs_bunmapi()
5360 				error = xfs_bmap_add_extent(ip, lastx - 1, &cur,  in xfs_bunmapi()
5369 				error = xfs_bmap_add_extent(ip, lastx, &cur,  in xfs_bunmapi()
5412 		error = xfs_bmap_del_extent(ip, tp, lastx, flist, cur, &del,  in xfs_bunmapi()
5419 		lastx = ifp->if_lastex;  in xfs_bunmapi()
5424 		ep = &ifp->if_u1.if_extents[lastx];  in xfs_bunmapi()
5426 			if (lastx >= XFS_IFORK_NEXTENTS(ip, whichfork) ||  in xfs_bunmapi()
5428 				lastx--;  in xfs_bunmapi()
5431 			if (lastx >= 0)  in xfs_bunmapi()
5436 	ifp->if_lastex = lastx;  in xfs_bunmapi()
5437 	*done = bno == (xfs_fileoff_t)-1 || bno < start || lastx < 0;  in xfs_bunmapi()