cur->bc_private.b.whichfork);
block = xfs_bmbt_get_block(cur, level, &bp);
} else if (level == cur->bc_nlevels - 1) {
- if ((error = xfs_bmbt_newroot(cur, &logflags, stat)) ||
+ if ((error = xfs_btree_new_iroot(cur, &logflags, stat)) ||
*stat == 0) {
XFS_BMBT_TRACE_CURSOR(cur, ERROR);
return error;
XFS_BMBT_TRACE_CURSOR(cur, EXIT);
}
-/*
- * Give the bmap btree a new root block. Copy the old broot contents
- * down into a real block and make the broot point to it.
- */
-int /* error */
-xfs_bmbt_newroot(
- xfs_btree_cur_t *cur, /* btree cursor */
- int *logflags, /* logging flags for inode */
- int *stat) /* return status - 0 fail */
-{
- xfs_alloc_arg_t args; /* allocation arguments */
- xfs_bmbt_block_t *block; /* bmap btree block */
- xfs_buf_t *bp; /* buffer for block */
- xfs_bmbt_block_t *cblock; /* child btree block */
- xfs_bmbt_key_t *ckp; /* child key pointer */
- xfs_bmbt_ptr_t *cpp; /* child ptr pointer */
- int error; /* error return code */
-#ifdef DEBUG
- int i; /* loop counter */
-#endif
- xfs_bmbt_key_t *kp; /* pointer to bmap btree key */
- int level; /* btree level */
- xfs_bmbt_ptr_t *pp; /* pointer to bmap block addr */
-
- XFS_BMBT_TRACE_CURSOR(cur, ENTRY);
- level = cur->bc_nlevels - 1;
- block = xfs_bmbt_get_block(cur, level, &bp);
- /*
- * Copy the root into a real block.
- */
- args.mp = cur->bc_mp;
- pp = XFS_BMAP_PTR_IADDR(block, 1, cur);
- args.tp = cur->bc_tp;
- args.fsbno = cur->bc_private.b.firstblock;
- args.mod = args.minleft = args.alignment = args.total = args.isfl =
- args.userdata = args.minalignslop = 0;
- args.minlen = args.maxlen = args.prod = 1;
- args.wasdel = cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL;
- args.firstblock = args.fsbno;
- if (args.fsbno == NULLFSBLOCK) {
-#ifdef DEBUG
- if ((error = xfs_btree_check_lptr_disk(cur, *pp, level))) {
- XFS_BMBT_TRACE_CURSOR(cur, ERROR);
- return error;
- }
-#endif
- args.fsbno = be64_to_cpu(*pp);
- args.type = XFS_ALLOCTYPE_START_BNO;
- } else if (cur->bc_private.b.flist->xbf_low)
- args.type = XFS_ALLOCTYPE_START_BNO;
- else
- args.type = XFS_ALLOCTYPE_NEAR_BNO;
- if ((error = xfs_alloc_vextent(&args))) {
- XFS_BMBT_TRACE_CURSOR(cur, ERROR);
- return error;
- }
- if (args.fsbno == NULLFSBLOCK) {
- XFS_BMBT_TRACE_CURSOR(cur, EXIT);
- *stat = 0;
- return 0;
- }
- ASSERT(args.len == 1);
- cur->bc_private.b.firstblock = args.fsbno;
- cur->bc_private.b.allocated++;
- cur->bc_private.b.ip->i_d.di_nblocks++;
- XFS_TRANS_MOD_DQUOT_BYINO(args.mp, args.tp, cur->bc_private.b.ip,
- XFS_TRANS_DQ_BCOUNT, 1L);
- bp = xfs_btree_get_bufl(args.mp, cur->bc_tp, args.fsbno, 0);
- cblock = XFS_BUF_TO_BMBT_BLOCK(bp);
- *cblock = *block;
- be16_add_cpu(&block->bb_level, 1);
- block->bb_numrecs = cpu_to_be16(1);
- cur->bc_nlevels++;
- cur->bc_ptrs[level + 1] = 1;
- kp = XFS_BMAP_KEY_IADDR(block, 1, cur);
- ckp = XFS_BMAP_KEY_IADDR(cblock, 1, cur);
- memcpy(ckp, kp, be16_to_cpu(cblock->bb_numrecs) * sizeof(*kp));
- cpp = XFS_BMAP_PTR_IADDR(cblock, 1, cur);
-#ifdef DEBUG
- for (i = 0; i < be16_to_cpu(cblock->bb_numrecs); i++) {
- if ((error = xfs_btree_check_lptr_disk(cur, pp[i], level))) {
- XFS_BMBT_TRACE_CURSOR(cur, ERROR);
- return error;
- }
- }
-#endif
- memcpy(cpp, pp, be16_to_cpu(cblock->bb_numrecs) * sizeof(*pp));
-#ifdef DEBUG
- if ((error = xfs_btree_check_lptr(cur, args.fsbno, level))) {
- XFS_BMBT_TRACE_CURSOR(cur, ERROR);
- return error;
- }
-#endif
- *pp = cpu_to_be64(args.fsbno);
- xfs_iroot_realloc(cur->bc_private.b.ip, 1 - be16_to_cpu(cblock->bb_numrecs),
- cur->bc_private.b.whichfork);
- xfs_btree_setbuf(cur, level, bp);
- /*
- * Do all this logging at the end so that
- * the root is at the right level.
- */
- xfs_bmbt_log_block(cur, bp, XFS_BB_ALL_BITS);
- xfs_bmbt_log_keys(cur, bp, 1, be16_to_cpu(cblock->bb_numrecs));
- xfs_bmbt_log_ptrs(cur, bp, 1, be16_to_cpu(cblock->bb_numrecs));
- XFS_BMBT_TRACE_CURSOR(cur, EXIT);
- *logflags |=
- XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork);
- *stat = 1;
- return 0;
-}
-
/*
* Set all the fields in a bmap extent record from the arguments.
*/
return error;
}
+/*
+ * Copy the old inode root contents into a real block and make the
+ * broot point to it.
+ */
+int /* error */
+xfs_btree_new_iroot(
+ struct xfs_btree_cur *cur, /* btree cursor */
+ int *logflags, /* logging flags for inode */
+ int *stat) /* return status - 0 fail */
+{
+ struct xfs_buf *cbp; /* buffer for cblock */
+ struct xfs_btree_block *block; /* btree block */
+ struct xfs_btree_block *cblock; /* child btree block */
+ union xfs_btree_key *ckp; /* child key pointer */
+ union xfs_btree_ptr *cpp; /* child ptr pointer */
+ union xfs_btree_key *kp; /* pointer to btree key */
+ union xfs_btree_ptr *pp; /* pointer to block addr */
+ union xfs_btree_ptr nptr; /* new block addr */
+ int level; /* btree level */
+ int error; /* error return code */
+#ifdef DEBUG
+ int i; /* loop counter */
+#endif
+
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_ENTRY);
+ XFS_BTREE_STATS_INC(cur, newroot);
+
+ ASSERT(cur->bc_flags & XFS_BTREE_ROOT_IN_INODE);
+
+ level = cur->bc_nlevels - 1;
+
+ block = xfs_btree_get_iroot(cur);
+ pp = xfs_btree_ptr_addr(cur, 1, block);
+
+ /* Allocate the new block. If we can't do it, we're toast. Give up. */
+ error = cur->bc_ops->alloc_block(cur, pp, &nptr, 1, stat);
+ if (error)
+ goto error0;
+ if (*stat == 0) {
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
+ return 0;
+ }
+ XFS_BTREE_STATS_INC(cur, alloc);
+
+ /* Copy the root into a real block. */
+ error = xfs_btree_get_buf_block(cur, &nptr, 0, &cblock, &cbp);
+ if (error)
+ goto error0;
+
+ memcpy(cblock, block, xfs_btree_block_len(cur));
+
+ be16_add_cpu(&block->bb_level, 1);
+ xfs_btree_set_numrecs(block, 1);
+ cur->bc_nlevels++;
+ cur->bc_ptrs[level + 1] = 1;
+
+ kp = xfs_btree_key_addr(cur, 1, block);
+ ckp = xfs_btree_key_addr(cur, 1, cblock);
+ xfs_btree_copy_keys(cur, ckp, kp, xfs_btree_get_numrecs(cblock));
+
+ cpp = xfs_btree_ptr_addr(cur, 1, cblock);
+#ifdef DEBUG
+ for (i = 0; i < be16_to_cpu(cblock->bb_numrecs); i++) {
+ error = xfs_btree_check_ptr(cur, pp, i, level);
+ if (error)
+ goto error0;
+ }
+#endif
+ xfs_btree_copy_ptrs(cur, cpp, pp, xfs_btree_get_numrecs(cblock));
+
+#ifdef DEBUG
+ error = xfs_btree_check_ptr(cur, &nptr, 0, level);
+ if (error)
+ goto error0;
+#endif
+ xfs_btree_copy_ptrs(cur, pp, &nptr, 1);
+
+ xfs_iroot_realloc(cur->bc_private.b.ip,
+ 1 - xfs_btree_get_numrecs(cblock),
+ cur->bc_private.b.whichfork);
+
+ xfs_btree_setbuf(cur, level, cbp);
+
+ /*
+ * Do all this logging at the end so that
+ * the root is at the right level.
+ */
+ xfs_btree_log_block(cur, cbp, XFS_BB_ALL_BITS);
+ xfs_btree_log_keys(cur, cbp, 1, be16_to_cpu(cblock->bb_numrecs));
+ xfs_btree_log_ptrs(cur, cbp, 1, be16_to_cpu(cblock->bb_numrecs));
+
+ *logflags |=
+ XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork);
+ *stat = 1;
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
+ return 0;
+error0:
+ XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR);
+ return error;
+}
+
/*
* Allocate a new root block, fill it in.
*/
projects / deliverable / linux.git / commitdiff
