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-rw-r--r--fs/btrfs/transaction.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index aa2219ebecc9..e0faf803513a 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -248,6 +248,8 @@ loop:
INIT_LIST_HEAD(&cur_trans->pending_chunks);
INIT_LIST_HEAD(&cur_trans->switch_commits);
INIT_LIST_HEAD(&cur_trans->pending_ordered);
+ INIT_LIST_HEAD(&cur_trans->dirty_bgs);
+ spin_lock_init(&cur_trans->dirty_bgs_lock);
list_add_tail(&cur_trans->list, &fs_info->trans_list);
extent_io_tree_init(&cur_trans->dirty_pages,
fs_info->btree_inode->i_mapping);
@@ -1028,7 +1030,9 @@ static int update_cowonly_root(struct btrfs_trans_handle *trans,
while (1) {
old_root_bytenr = btrfs_root_bytenr(&root->root_item);
if (old_root_bytenr == root->node->start &&
- old_root_used == btrfs_root_used(&root->root_item))
+ old_root_used == btrfs_root_used(&root->root_item) &&
+ (!extent_root ||
+ list_empty(&trans->transaction->dirty_bgs)))
break;
btrfs_set_root_node(&root->root_item, root->node);
@@ -1047,6 +1051,9 @@ static int update_cowonly_root(struct btrfs_trans_handle *trans,
ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
if (ret)
return ret;
+ ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
+ if (ret)
+ return ret;
}
return 0;
@@ -1067,10 +1074,6 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans,
struct extent_buffer *eb;
int ret;
- ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
- if (ret)
- return ret;
-
eb = btrfs_lock_root_node(fs_info->tree_root);
ret = btrfs_cow_block(trans, fs_info->tree_root, eb, NULL,
0, &eb);
@@ -1990,6 +1993,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
switch_commit_roots(cur_trans, root->fs_info);
assert_qgroups_uptodate(trans);
+ ASSERT(list_empty(&cur_trans->dirty_bgs));
update_super_roots(root);
btrfs_set_super_log_root(root->fs_info->super_copy, 0);