/*ARGSUSED3*/ xfs_alloc_key_t * xfs_alloc_key_addr(xfs_alloc_block_t *bb, int i, xfs_btree_cur_t *cur) { return XFS_ALLOC_KEY_ADDR(bb, i, cur); }
static void prop_freespace_cursor(xfs_mount_t *mp, xfs_agnumber_t agno, bt_status_t *btree_curs, xfs_agblock_t startblock, xfs_extlen_t blockcount, int level, __uint32_t magic) { struct xfs_btree_block *bt_hdr; xfs_alloc_key_t *bt_key; xfs_alloc_ptr_t *bt_ptr; xfs_agblock_t agbno; bt_stat_level_t *lptr; __uint32_t crc_magic; if (magic == XFS_ABTB_MAGIC) crc_magic = XFS_ABTB_CRC_MAGIC; else crc_magic = XFS_ABTC_CRC_MAGIC; level++; if (level >= btree_curs->num_levels) return; lptr = &btree_curs->level[level]; bt_hdr = XFS_BUF_TO_BLOCK(lptr->buf_p); if (be16_to_cpu(bt_hdr->bb_numrecs) == 0) { /* * only happens once when initializing the * left-hand side of the tree. */ prop_freespace_cursor(mp, agno, btree_curs, startblock, blockcount, level, magic); } if (be16_to_cpu(bt_hdr->bb_numrecs) == lptr->num_recs_pb + (lptr->modulo > 0)) { /* * write out current prev block, grab us a new block, * and set the rightsib pointer of current block */ #ifdef XR_BLD_FREE_TRACE fprintf(stderr, " %d ", lptr->prev_agbno); #endif if (lptr->prev_agbno != NULLAGBLOCK) { ASSERT(lptr->prev_buf_p != NULL); libxfs_writebuf(lptr->prev_buf_p, 0); } lptr->prev_agbno = lptr->agbno;; lptr->prev_buf_p = lptr->buf_p; agbno = get_next_blockaddr(agno, level, btree_curs); bt_hdr->bb_u.s.bb_rightsib = cpu_to_be32(agbno); lptr->buf_p = libxfs_getbuf(mp->m_dev, XFS_AGB_TO_DADDR(mp, agno, agbno), XFS_FSB_TO_BB(mp, 1)); lptr->agbno = agbno; if (lptr->modulo) lptr->modulo--; /* * initialize block header */ lptr->buf_p->b_ops = &xfs_allocbt_buf_ops; bt_hdr = XFS_BUF_TO_BLOCK(lptr->buf_p); memset(bt_hdr, 0, mp->m_sb.sb_blocksize); if (xfs_sb_version_hascrc(&mp->m_sb)) xfs_btree_init_block(mp, lptr->buf_p, crc_magic, level, 0, agno, XFS_BTREE_CRC_BLOCKS); else xfs_btree_init_block(mp, lptr->buf_p, magic, level, 0, agno, 0); bt_hdr->bb_u.s.bb_leftsib = cpu_to_be32(lptr->prev_agbno); /* * propagate extent record for first extent in new block up */ prop_freespace_cursor(mp, agno, btree_curs, startblock, blockcount, level, magic); } /* * add extent info to current block */ be16_add_cpu(&bt_hdr->bb_numrecs, 1); bt_key = XFS_ALLOC_KEY_ADDR(mp, bt_hdr, be16_to_cpu(bt_hdr->bb_numrecs)); bt_ptr = XFS_ALLOC_PTR_ADDR(mp, bt_hdr, be16_to_cpu(bt_hdr->bb_numrecs), mp->m_alloc_mxr[1]); bt_key->ar_startblock = cpu_to_be32(startblock); bt_key->ar_blockcount = cpu_to_be32(blockcount); *bt_ptr = cpu_to_be32(btree_curs->level[level-1].agbno); }