diff options
Diffstat (limited to 'fs/btrfs/ctree.c')
| -rw-r--r-- | fs/btrfs/ctree.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 864ee42..39b5515 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -200,6 +200,10 @@ static int check_leaf(struct btrfs_root *root, struct btrfs_path *path, static int check_block(struct btrfs_root *root, struct btrfs_path *path, int level) { + struct btrfs_node *node = btrfs_buffer_node(path->nodes[level]); + if (memcmp(node->header.fsid, root->fs_info->disk_super->fsid, + sizeof(node->header.fsid))) + BUG(); if (level == 0) return check_leaf(root, path, level); return check_node(root, path, level); @@ -687,6 +691,8 @@ static int insert_new_root(struct btrfs_trans_handle *trans, struct btrfs_root btrfs_set_header_parentid(&c->header, btrfs_header_parentid(btrfs_buffer_header(root->node))); lower = btrfs_buffer_node(path->nodes[level-1]); + memcpy(c->header.fsid, root->fs_info->disk_super->fsid, + sizeof(c->header.fsid)); if (btrfs_is_leaf(lower)) lower_key = &((struct btrfs_leaf *)lower)->items[0].key; else @@ -780,6 +786,8 @@ static int split_node(struct btrfs_trans_handle *trans, struct btrfs_root btrfs_set_header_generation(&split->header, trans->transid); btrfs_set_header_parentid(&split->header, btrfs_header_parentid(btrfs_buffer_header(root->node))); + memcpy(split->header.fsid, root->fs_info->disk_super->fsid, + sizeof(split->header.fsid)); mid = (c_nritems + 1) / 2; btrfs_memcpy(root, split, split->ptrs, c->ptrs + mid, (c_nritems - mid) * sizeof(struct btrfs_key_ptr)); @@ -1139,6 +1147,8 @@ static int split_leaf(struct btrfs_trans_handle *trans, struct btrfs_root btrfs_set_header_level(&right->header, 0); btrfs_set_header_parentid(&right->header, btrfs_header_parentid(btrfs_buffer_header(root->node))); + memcpy(right->header.fsid, root->fs_info->disk_super->fsid, + sizeof(right->header.fsid)); if (mid <= slot) { if (nritems == 1 || leaf_space_used(l, mid, nritems - mid) + space_needed > @@ -1229,6 +1239,8 @@ static int split_leaf(struct btrfs_trans_handle *trans, struct btrfs_root btrfs_set_header_level(&right->header, 0); btrfs_set_header_parentid(&right->header, btrfs_header_parentid(btrfs_buffer_header(root->node))); + memcpy(right->header.fsid, root->fs_info->disk_super->fsid, + sizeof(right->header.fsid)); btrfs_cpu_key_to_disk(&disk_key, ins_key); btrfs_set_header_nritems(&right->header, 0); wret = insert_ptr(trans, root, path, |
