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Btrfs: Metadata reservation for orphan inodes

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reserve metadata space for handling orphan inodes

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Yan, Zheng
2010-05-16 10:49:58 -04:00
committed by Chris Mason
parent 8929ecfa50
commit d68fc57b7e
9 changed files with 367 additions and 68 deletions
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32
fs/btrfs/disk-io.c
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@@ -894,7 +894,8 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->ref_cows = 0;
root->track_dirty = 0;
root->in_radix = 0;
root->clean_orphans = 0;
root->orphan_item_inserted = 0;
root->orphan_cleanup_state = 0;
root->fs_info = fs_info;
root->objectid = objectid;
@@ -904,12 +905,13 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->in_sysfs = 0;
root->inode_tree = RB_ROOT;
root->block_rsv = NULL;
root->orphan_block_rsv = NULL;
INIT_LIST_HEAD(&root->dirty_list);
INIT_LIST_HEAD(&root->orphan_list);
INIT_LIST_HEAD(&root->root_list);
spin_lock_init(&root->node_lock);
spin_lock_init(&root->list_lock);
spin_lock_init(&root->orphan_lock);
spin_lock_init(&root->inode_lock);
spin_lock_init(&root->accounting_lock);
mutex_init(&root->objectid_mutex);
@@ -1193,19 +1195,23 @@ again:
if (root)
return root;
ret = btrfs_find_orphan_item(fs_info->tree_root, location->objectid);
if (ret == 0)
ret = -ENOENT;
if (ret < 0)
return ERR_PTR(ret);
root = btrfs_read_fs_root_no_radix(fs_info->tree_root, location);
if (IS_ERR(root))
return root;
WARN_ON(btrfs_root_refs(&root->root_item) == 0);
set_anon_super(&root->anon_super, NULL);
if (btrfs_root_refs(&root->root_item) == 0) {
ret = -ENOENT;
goto fail;
}
ret = btrfs_find_orphan_item(fs_info->tree_root, location->objectid);
if (ret < 0)
goto fail;
if (ret == 0)
root->orphan_item_inserted = 1;
ret = radix_tree_preload(GFP_NOFS & ~__GFP_HIGHMEM);
if (ret)
goto fail;
@@ -1214,10 +1220,9 @@ again:
ret = radix_tree_insert(&fs_info->fs_roots_radix,
(unsigned long)root->root_key.objectid,
root);
if (ret == 0) {
if (ret == 0)
root->in_radix = 1;
root->clean_orphans = 1;
}
spin_unlock(&fs_info->fs_roots_radix_lock);
radix_tree_preload_end();
if (ret) {
@@ -1981,6 +1986,9 @@ struct btrfs_root *open_ctree(struct super_block *sb,
BUG_ON(ret);
if (!(sb->s_flags & MS_RDONLY)) {
ret = btrfs_cleanup_fs_roots(fs_info);
BUG_ON(ret);
ret = btrfs_recover_relocation(tree_root);
if (ret < 0) {
printk(KERN_WARNING