diff options
Diffstat (limited to 'disk-io.c')
| -rw-r--r-- | disk-io.c | 36 |
1 files changed, 35 insertions, 1 deletions
@@ -448,6 +448,33 @@ static int find_and_setup_root(struct btrfs_root *tree_root, return 0; } +static int find_and_setup_log_root(struct btrfs_root *tree_root, + struct btrfs_fs_info *fs_info, + struct btrfs_super_block *disk_super) +{ + u32 blocksize; + u64 blocknr = btrfs_super_log_root(disk_super); + struct btrfs_root *log_root = malloc(sizeof(struct btrfs_root)); + + if (blocknr == 0) + return 0; + + blocksize = btrfs_level_size(tree_root, + btrfs_super_log_root_level(disk_super)); + + __setup_root(tree_root->nodesize, tree_root->leafsize, + tree_root->sectorsize, tree_root->stripesize, + log_root, fs_info, BTRFS_TREE_LOG_OBJECTID); + + log_root->node = read_tree_block(tree_root, blocknr, + blocksize, + btrfs_super_generation(disk_super) + 1); + + fs_info->log_root_tree = log_root; + BUG_ON(!log_root->node); + return 0; +} + int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root) { if (root->node) @@ -681,7 +708,8 @@ struct btrfs_root *open_ctree_fd(int fp, const char *path, u64 sb_bytenr, BTRFS_FS_TREE_OBJECTID, root); BUG_ON(ret); root->ref_cows = 1; - fs_info->generation = btrfs_super_generation(disk_super) + 1; + + find_and_setup_log_root(tree_root, fs_info, disk_super); btrfs_read_block_groups(root); fs_info->data_alloc_profile = (u64)-1; @@ -885,6 +913,12 @@ int close_ctree(struct btrfs_root *root) if (root->fs_info->csum_root->node) free_extent_buffer(root->fs_info->csum_root->node); + if (root->fs_info->log_root_tree) { + if (root->fs_info->log_root_tree->node) + free_extent_buffer(root->fs_info->log_root_tree->node); + free(root->fs_info->log_root_tree); + } + close_all_devices(root->fs_info); extent_io_tree_cleanup(&fs_info->extent_cache); extent_io_tree_cleanup(&fs_info->free_space_cache); |