892 		xfs_ext_irec_t	*erp;		/* irec pointer */  in xfs_iext_get_ext()  local
896 		erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 0);  in xfs_iext_get_ext()
897 		return &erp->er_extbuf[page_idx];  in xfs_iext_get_ext()
986 		xfs_ext_irec_t	*erp;  in xfs_iext_add()  local
992 			erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 1);  in xfs_iext_add()
996 			erp = ifp->if_u1.if_ext_irec;  in xfs_iext_add()
999 		if (erp && erp->er_extcount + ext_diff <= XFS_LINEAR_EXTS) {  in xfs_iext_add()
1000 			if (page_idx < erp->er_extcount) {  in xfs_iext_add()
1001 				memmove(&erp->er_extbuf[page_idx + ext_diff],  in xfs_iext_add()
1002 					&erp->er_extbuf[page_idx],  in xfs_iext_add()
1003 					(erp->er_extcount - page_idx) *  in xfs_iext_add()
1005 				memset(&erp->er_extbuf[page_idx], 0, byte_diff);  in xfs_iext_add()
1007 			erp->er_extcount += ext_diff;  in xfs_iext_add()
1011 		else if (erp) {  in xfs_iext_add()
1025 				erp = xfs_iext_irec_new(ifp, erp_idx);  in xfs_iext_add()
1026 				erp->er_extcount = min(count, XFS_LINEAR_EXTS);  in xfs_iext_add()
1027 				count -= erp->er_extcount;  in xfs_iext_add()
1060 	xfs_ext_irec_t	*erp;			/* pointer to irec entry */  in xfs_iext_add_indirect_multi()  local
1068 	erp = &ifp->if_u1.if_ext_irec[erp_idx];  in xfs_iext_add_indirect_multi()
1069 	nex2 = erp->er_extcount - idx;  in xfs_iext_add_indirect_multi()
1078 		memmove(nex2_ep, &erp->er_extbuf[idx], byte_diff);  in xfs_iext_add_indirect_multi()
1079 		erp->er_extcount -= nex2;  in xfs_iext_add_indirect_multi()
1081 		memset(&erp->er_extbuf[idx], 0, byte_diff);  in xfs_iext_add_indirect_multi()
1091 	ext_diff = MIN(ext_cnt, (int)XFS_LINEAR_EXTS - erp->er_extcount);  in xfs_iext_add_indirect_multi()
1093 		erp->er_extcount += ext_diff;  in xfs_iext_add_indirect_multi()
1099 		erp = xfs_iext_irec_new(ifp, erp_idx);  in xfs_iext_add_indirect_multi()
1101 		erp->er_extcount = ext_diff;  in xfs_iext_add_indirect_multi()
1112 		ext_avail = XFS_LINEAR_EXTS - erp->er_extcount;  in xfs_iext_add_indirect_multi()
1119 			i = erp->er_extcount;  in xfs_iext_add_indirect_multi()
1129 			erp++;  in xfs_iext_add_indirect_multi()
1131 			memmove(&erp->er_extbuf[nex2], erp->er_extbuf,  in xfs_iext_add_indirect_multi()
1132 				erp->er_extcount * sizeof(xfs_bmbt_rec_t));  in xfs_iext_add_indirect_multi()
1140 			erp = xfs_iext_irec_new(ifp, erp_idx);  in xfs_iext_add_indirect_multi()
1142 		memmove(&erp->er_extbuf[i], nex2_ep, byte_diff);  in xfs_iext_add_indirect_multi()
1144 		erp->er_extcount += nex2;  in xfs_iext_add_indirect_multi()
1288 	xfs_ext_irec_t	*erp;		/* indirection array pointer */  in xfs_iext_remove_indirect()  local
1297 	erp = xfs_iext_idx_to_irec(ifp,  &page_idx, &erp_idx, 0);  in xfs_iext_remove_indirect()
1298 	ASSERT(erp != NULL);  in xfs_iext_remove_indirect()
1302 		nex2 = MAX((erp->er_extcount - (nex1 + ext_cnt)), 0);  in xfs_iext_remove_indirect()
1303 		ext_diff = MIN(ext_cnt, (erp->er_extcount - nex1));  in xfs_iext_remove_indirect()
1308 		if (ext_diff == erp->er_extcount) {  in xfs_iext_remove_indirect()
1315 				erp = &ifp->if_u1.if_ext_irec[erp_idx];  in xfs_iext_remove_indirect()
1324 			memmove(&erp->er_extbuf[nex1],  in xfs_iext_remove_indirect()
1325 				&erp->er_extbuf[nex1 + ext_diff],  in xfs_iext_remove_indirect()
1329 		memset(&erp->er_extbuf[nex1 + nex2], 0, (XFS_IEXT_BUFSZ -  in xfs_iext_remove_indirect()
1332 		erp->er_extcount -= ext_diff;  in xfs_iext_remove_indirect()
1337 		erp++;  in xfs_iext_remove_indirect()
1537 	xfs_ext_irec_t	*erp = NULL;	/* indirection array pointer */  in xfs_iext_bno_to_ext()  local
1553 		erp = xfs_iext_bno_to_irec(ifp, bno, &erp_idx);  in xfs_iext_bno_to_ext()
1554 		base = erp->er_extbuf;  in xfs_iext_bno_to_ext()
1555 		high = erp->er_extcount - 1;  in xfs_iext_bno_to_ext()
1573 				idx += erp->er_extoff;  in xfs_iext_bno_to_ext()
1581 		idx += erp->er_extoff;  in xfs_iext_bno_to_ext()
1605 	xfs_ext_irec_t	*erp = NULL;	/* indirection array pointer */  in xfs_iext_bno_to_irec()  local
1619 		erp = &ifp->if_u1.if_ext_irec[erp_idx];  in xfs_iext_bno_to_irec()
1620 		erp_next = erp_idx < nlists - 1 ? erp + 1 : NULL;  in xfs_iext_bno_to_irec()
1621 		if (bno < xfs_bmbt_get_startoff(erp->er_extbuf)) {  in xfs_iext_bno_to_irec()
1631 	return erp;  in xfs_iext_bno_to_irec()
1648 	xfs_ext_irec_t	*erp = NULL;	/* pointer to current irec */  in xfs_iext_idx_to_irec()  local
1668 		erp = &ifp->if_u1.if_ext_irec[erp_idx];  in xfs_iext_idx_to_irec()
1669 		prev = erp_idx > 0 ? erp - 1 : NULL;  in xfs_iext_idx_to_irec()
1670 		if (page_idx < erp->er_extoff || (page_idx == erp->er_extoff &&  in xfs_iext_idx_to_irec()
1673 		} else if (page_idx > erp->er_extoff + erp->er_extcount ||  in xfs_iext_idx_to_irec()
1674 			   (page_idx == erp->er_extoff + erp->er_extcount &&  in xfs_iext_idx_to_irec()
1677 		} else if (page_idx == erp->er_extoff + erp->er_extcount &&  in xfs_iext_idx_to_irec()
1678 			   erp->er_extcount == XFS_LINEAR_EXTS) {  in xfs_iext_idx_to_irec()
1682 			erp = erp_idx < nlists ? erp + 1 : NULL;  in xfs_iext_idx_to_irec()
1685 			page_idx -= erp->er_extoff;  in xfs_iext_idx_to_irec()
1691 	return erp;  in xfs_iext_idx_to_irec()
1702 	xfs_ext_irec_t	*erp;		/* indirection array pointer */  in xfs_iext_irec_init()  local
1709 	erp = kmem_alloc(sizeof(xfs_ext_irec_t), KM_NOFS);  in xfs_iext_irec_init()
1718 	erp->er_extbuf = ifp->if_u1.if_extents;  in xfs_iext_irec_init()
1719 	erp->er_extcount = nextents;  in xfs_iext_irec_init()
1720 	erp->er_extoff = 0;  in xfs_iext_irec_init()
1725 	ifp->if_u1.if_ext_irec = erp;  in xfs_iext_irec_init()
1738 	xfs_ext_irec_t	*erp;		/* indirection array pointer */  in xfs_iext_irec_new()  local
1752 	erp = ifp->if_u1.if_ext_irec;  in xfs_iext_irec_new()
1754 		memmove(&erp[i], &erp[i-1], sizeof(xfs_ext_irec_t));  in xfs_iext_irec_new()
1759 	erp = ifp->if_u1.if_ext_irec;  in xfs_iext_irec_new()
1760 	erp[erp_idx].er_extbuf = kmem_alloc(XFS_IEXT_BUFSZ, KM_NOFS);  in xfs_iext_irec_new()
1762 	memset(erp[erp_idx].er_extbuf, 0, XFS_IEXT_BUFSZ);  in xfs_iext_irec_new()
1763 	erp[erp_idx].er_extcount = 0;  in xfs_iext_irec_new()
1764 	erp[erp_idx].er_extoff = erp_idx > 0 ?  in xfs_iext_irec_new()
1765 		erp[erp_idx-1].er_extoff + erp[erp_idx-1].er_extcount : 0;  in xfs_iext_irec_new()
1766 	return (&erp[erp_idx]);  in xfs_iext_irec_new()
1777 	xfs_ext_irec_t	*erp;		/* indirection array pointer */  in xfs_iext_irec_remove()  local
1783 	erp = &ifp->if_u1.if_ext_irec[erp_idx];  in xfs_iext_irec_remove()
1784 	if (erp->er_extbuf) {  in xfs_iext_irec_remove()
1786 			-erp->er_extcount);  in xfs_iext_irec_remove()
1787 		kmem_free(erp->er_extbuf);  in xfs_iext_irec_remove()
1790 	erp = ifp->if_u1.if_ext_irec;  in xfs_iext_irec_remove()
1792 		memmove(&erp[i], &erp[i+1], sizeof(xfs_ext_irec_t));  in xfs_iext_irec_remove()
1851 	xfs_ext_irec_t	*erp, *erp_next;/* pointers to irec entries */  in xfs_iext_irec_compact_pages()  local
1858 		erp = &ifp->if_u1.if_ext_irec[erp_idx];  in xfs_iext_irec_compact_pages()
1859 		erp_next = erp + 1;  in xfs_iext_irec_compact_pages()
1861 		    (XFS_LINEAR_EXTS - erp->er_extcount)) {  in xfs_iext_irec_compact_pages()
1862 			memcpy(&erp->er_extbuf[erp->er_extcount],  in xfs_iext_irec_compact_pages()
1865 			erp->er_extcount += erp_next->er_extcount;  in xfs_iext_irec_compact_pages()