diff options
Diffstat (limited to 'fs/jfs/jfs_dtree.c')
| -rw-r--r-- | fs/jfs/jfs_dtree.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c index 8676aee..73b5fc7 100644 --- a/fs/jfs/jfs_dtree.c +++ b/fs/jfs/jfs_dtree.c @@ -4554,202 +4554,3 @@ int dtModify(tid_t tid, struct inode *ip, return 0; } - -#ifdef _JFS_DEBUG_DTREE -/* - * dtDisplayTree() - * - * function: traverse forward - */ -int dtDisplayTree(struct inode *ip) -{ - int rc; - struct metapage *mp; - dtpage_t *p; - s64 bn, pbn; - int index, lastindex, v, h; - pxd_t *xd; - struct btstack btstack; - struct btframe *btsp; - struct btframe *parent; - u8 *stbl; - int psize = 256; - - printk("display B+-tree.\n"); - - /* clear stack */ - btsp = btstack.stack; - - /* - * start with root - * - * root resides in the inode - */ - bn = 0; - v = h = 0; - - /* - * first access of each page: - */ - newPage: - DT_GETPAGE(ip, bn, mp, psize, p, rc); - if (rc) - return rc; - - /* process entries forward from first index */ - index = 0; - lastindex = p->header.nextindex - 1; - - if (p->header.flag & BT_INTERNAL) { - /* - * first access of each internal page - */ - printf("internal page "); - dtDisplayPage(ip, bn, p); - - goto getChild; - } else { /* (p->header.flag & BT_LEAF) */ - - /* - * first access of each leaf page - */ - printf("leaf page "); - dtDisplayPage(ip, bn, p); - - /* - * process leaf page entries - * - for ( ; index <= lastindex; index++) - { - } - */ - - /* unpin the leaf page */ - DT_PUTPAGE(mp); - } - - /* - * go back up to the parent page - */ - getParent: - /* pop/restore parent entry for the current child page */ - if ((parent = (btsp == btstack.stack ? NULL : --btsp)) == NULL) - /* current page must have been root */ - return; - - /* - * parent page scan completed - */ - if ((index = parent->index) == (lastindex = parent->lastindex)) { - /* go back up to the parent page */ - goto getParent; - } - - /* - * parent page has entries remaining - */ - /* get back the parent page */ - bn = parent->bn; - /* v = parent->level; */ - DT_GETPAGE(ip, bn, mp, PSIZE, p, rc); - if (rc) - return rc; - - /* get next parent entry */ - index++; - - /* - * internal page: go down to child page of current entry - */ - getChild: - /* push/save current parent entry for the child page */ - btsp->bn = pbn = bn; - btsp->index = index; - btsp->lastindex = lastindex; - /* btsp->level = v; */ - /* btsp->node = h; */ - ++btsp; - - /* get current entry for the child page */ - stbl = DT_GETSTBL(p); - xd = (pxd_t *) & p->slot[stbl[index]]; - - /* - * first access of each internal entry: - */ - - /* get child page */ - bn = addressPXD(xd); - psize = lengthPXD(xd) << ip->i_ipmnt->i_l2bsize; - - printk("traverse down 0x%Lx[%d]->0x%Lx\n", pbn, index, bn); - v++; - h = index; - - /* release parent page */ - DT_PUTPAGE(mp); - - /* process the child page */ - goto newPage; -} - - -/* - * dtDisplayPage() - * - * function: display page - */ -int dtDisplayPage(struct inode *ip, s64 bn, dtpage_t * p) -{ - int rc; - struct metapage *mp; - struct ldtentry *lh; - struct idtentry *ih; - pxd_t *xd; - int i, j; - u8 *stbl; - wchar_t name[JFS_NAME_MAX + 1]; - struct component_name key = { 0, name }; - int freepage = 0; - - if (p == NULL) { - freepage = 1; - DT_GETPAGE(ip, bn, mp, PSIZE, p, rc); - if (rc) - return rc; - } - - /* display page control */ - printk("bn:0x%Lx flag:0x%08x nextindex:%d\n", - bn, p->header.flag, p->header.nextindex); - - /* display entries */ - stbl = DT_GETSTBL(p); - for (i = 0, j = 1; i < p->header.nextindex; i++, j++) { - dtGetKey(p, i, &key, JFS_SBI(ip->i_sb)->mntflag); - key.name[key.namlen] = '\0'; - if (p->header.flag & BT_LEAF) { - lh = (struct ldtentry *) & p->slot[stbl[i]]; - printf("\t[%d] %s:%d", i, key.name, - le32_to_cpu(lh->inumber)); - } else { - ih = (struct idtentry *) & p->slot[stbl[i]]; - xd = (pxd_t *) ih; - bn = addressPXD(xd); - printf("\t[%d] %s:0x%Lx", i, key.name, bn); - } - - if (j == 4) { - printf("\n"); - j = 0; - } - } - - printf("\n"); - - if (freepage) - DT_PUTPAGE(mp); - - return 0; -} -#endif /* _JFS_DEBUG_DTREE */ |
