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Btrfs: Add per-root block accounting and sysfs entries

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Josef Bacik
2007-08-29 15:47:34 -04:00
committed by David Woodhouse
parent b888db2bd7
commit 58176a9604
9 changed files with 393 additions and 11 deletions
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31
fs/btrfs/disk-io.c
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@@ -294,9 +294,12 @@ static int __setup_root(int blocksize,
root->last_trans = 0;
root->highest_inode = 0;
root->last_inode_alloc = 0;
root->name = NULL;
memset(&root->root_key, 0, sizeof(root->root_key));
memset(&root->root_item, 0, sizeof(root->root_item));
memset(&root->defrag_progress, 0, sizeof(root->defrag_progress));
memset(&root->root_kobj, 0, sizeof(root->root_kobj));
init_completion(&root->kobj_unregister);
root->defrag_running = 0;
root->defrag_level = 0;
root->root_key.objectid = objectid;
@@ -384,7 +387,8 @@ insert:
}
struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
struct btrfs_key *location)
struct btrfs_key *location,
const char *name, int namelen)
{
struct btrfs_root *root;
int ret;
@@ -405,6 +409,22 @@ struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
kfree(root);
return ERR_PTR(ret);
}
ret = btrfs_set_root_name(root, name, namelen);
if (ret) {
brelse(root->node);
kfree(root);
return ERR_PTR(ret);
}
ret = btrfs_sysfs_add_root(root);
if (ret) {
brelse(root->node);
kfree(root->name);
kfree(root);
return ERR_PTR(ret);
}
return root;
}
@@ -433,6 +453,8 @@ struct btrfs_root *open_ctree(struct super_block *sb)
INIT_RADIX_TREE(&fs_info->block_group_data_radix, GFP_KERNEL);
INIT_LIST_HEAD(&fs_info->trans_list);
INIT_LIST_HEAD(&fs_info->dead_roots);
memset(&fs_info->super_kobj, 0, sizeof(fs_info->super_kobj));
init_completion(&fs_info->kobj_unregister);
sb_set_blocksize(sb, 4096);
fs_info->running_transaction = NULL;
fs_info->last_trans_committed = 0;
@@ -500,8 +522,10 @@ struct btrfs_root *open_ctree(struct super_block *sb)
fs_info->generation = btrfs_super_generation(disk_super) + 1;
ret = btrfs_find_dead_roots(tree_root);
if (ret)
if (ret) {
mutex_unlock(&fs_info->fs_mutex);
goto fail_tree_root;
}
mutex_unlock(&fs_info->fs_mutex);
return tree_root;
@@ -553,12 +577,15 @@ int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
{
radix_tree_delete(&fs_info->fs_roots_radix,
(unsigned long)root->root_key.objectid);
btrfs_sysfs_del_root(root);
if (root->inode)
iput(root->inode);
if (root->node)
brelse(root->node);
if (root->commit_root)
brelse(root->commit_root);
if (root->name)
kfree(root->name);
kfree(root);
return 0;
}