112 					 struct btrfs_fs_info *fs_info)  in switch_commit_roots()  argument
116 	down_write(&fs_info->commit_root_sem);  in switch_commit_roots()
134 		btrfs_drop_and_free_fs_root(fs_info, root);  in switch_commit_roots()
138 	up_write(&fs_info->commit_root_sem);  in switch_commit_roots()
172 	struct btrfs_fs_info *fs_info = root->fs_info;  in join_transaction()  local
174 	spin_lock(&fs_info->trans_lock);  in join_transaction()
177 	if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) {  in join_transaction()
178 		spin_unlock(&fs_info->trans_lock);  in join_transaction()
182 	cur_trans = fs_info->running_transaction;  in join_transaction()
185 			spin_unlock(&fs_info->trans_lock);  in join_transaction()
189 			spin_unlock(&fs_info->trans_lock);  in join_transaction()
195 		spin_unlock(&fs_info->trans_lock);  in join_transaction()
198 	spin_unlock(&fs_info->trans_lock);  in join_transaction()
217 	spin_lock(&fs_info->trans_lock);  in join_transaction()
218 	if (fs_info->running_transaction) {  in join_transaction()
225 	} else if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) {  in join_transaction()
226 		spin_unlock(&fs_info->trans_lock);  in join_transaction()
257 	if (!list_empty(&fs_info->tree_mod_seq_list))  in join_transaction()
260 	if (!RB_EMPTY_ROOT(&fs_info->tree_mod_log))  in join_transaction()
263 	atomic64_set(&fs_info->tree_mod_seq, 0);  in join_transaction()
278 	list_add_tail(&cur_trans->list, &fs_info->trans_list);  in join_transaction()
280 			     fs_info->btree_inode->i_mapping);  in join_transaction()
281 	fs_info->generation++;  in join_transaction()
282 	cur_trans->transid = fs_info->generation;  in join_transaction()
283 	fs_info->running_transaction = cur_trans;  in join_transaction()
285 	spin_unlock(&fs_info->trans_lock);  in join_transaction()
301 		WARN_ON(root == root->fs_info->extent_root);  in record_root_in_trans()
316 		spin_lock(&root->fs_info->fs_roots_radix_lock);  in record_root_in_trans()
318 			spin_unlock(&root->fs_info->fs_roots_radix_lock);  in record_root_in_trans()
321 		radix_tree_tag_set(&root->fs_info->fs_roots_radix,  in record_root_in_trans()
324 		spin_unlock(&root->fs_info->fs_roots_radix_lock);  in record_root_in_trans()
365 	spin_lock(&root->fs_info->fs_roots_radix_lock);  in btrfs_add_dropped_root()
366 	radix_tree_tag_clear(&root->fs_info->fs_roots_radix,  in btrfs_add_dropped_root()
369 	spin_unlock(&root->fs_info->fs_roots_radix_lock);  in btrfs_add_dropped_root()
387 	mutex_lock(&root->fs_info->reloc_mutex);  in btrfs_record_root_in_trans()
389 	mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_record_root_in_trans()
409 	spin_lock(&root->fs_info->trans_lock);  in wait_current_trans()
410 	cur_trans = root->fs_info->running_transaction;  in wait_current_trans()
413 		spin_unlock(&root->fs_info->trans_lock);  in wait_current_trans()
415 		wait_event(root->fs_info->transaction_wait,  in wait_current_trans()
420 		spin_unlock(&root->fs_info->trans_lock);  in wait_current_trans()
426 	if (root->fs_info->log_root_recovering)  in may_wait_transaction()
433 	    !atomic_read(&root->fs_info->open_ioctl_trans))  in may_wait_transaction()
441 	if (!root->fs_info->reloc_ctl ||  in need_reserve_reloc_root()
464 	if (test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state))  in start_transaction()
481 	if (num_items > 0 && root != root->fs_info->chunk_root) {  in start_transaction()
497 					  &root->fs_info->trans_block_rsv,  in start_transaction()
520 		sb_start_intwrite(root->fs_info->sb);  in start_transaction()
540 	cur_trans = root->fs_info->running_transaction;  in start_transaction()
561 		trace_btrfs_space_reservation(root->fs_info, "transaction",  in start_transaction()
563 		h->block_rsv = &root->fs_info->trans_block_rsv;  in start_transaction()
577 		sb_end_intwrite(root->fs_info->sb);  in start_transaction()
581 		btrfs_block_rsv_release(root, &root->fs_info->trans_block_rsv,  in start_transaction()
612 	ret = btrfs_cond_migrate_bytes(root->fs_info,  in btrfs_start_transaction_fallback_global_rsv()
613 				       &root->fs_info->trans_block_rsv,  in btrfs_start_transaction_fallback_global_rsv()
621 	trans->block_rsv = &root->fs_info->trans_block_rsv;  in btrfs_start_transaction_fallback_global_rsv()
700 		if (transid <= root->fs_info->last_trans_committed)  in btrfs_wait_for_commit()
704 		spin_lock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
705 		list_for_each_entry(t, &root->fs_info->trans_list, list) {  in btrfs_wait_for_commit()
717 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
724 			if (transid > root->fs_info->last_trans_committed)  in btrfs_wait_for_commit()
730 		spin_lock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
731 		list_for_each_entry_reverse(t, &root->fs_info->trans_list,  in btrfs_wait_for_commit()
741 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_wait_for_commit()
754 	if (!atomic_read(&root->fs_info->open_ioctl_trans))  in btrfs_throttle()
761 	if (root->fs_info->global_block_rsv.space_info->full &&  in should_end_transaction()
765 	return !!btrfs_block_rsv_check(root, &root->fs_info->global_block_rsv, 5);  in should_end_transaction()
795 	struct btrfs_fs_info *info = root->fs_info;  in __btrfs_end_transaction()
836 	if (lock && !atomic_read(&root->fs_info->open_ioctl_trans) &&  in __btrfs_end_transaction()
853 		sb_end_intwrite(root->fs_info->sb);  in __btrfs_end_transaction()
875 	    test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) {  in __btrfs_end_transaction()
911 	struct address_space *mapping = root->fs_info->btree_inode->i_mapping;  in btrfs_write_marked_extents()
965 	struct address_space *mapping = root->fs_info->btree_inode->i_mapping;  in btrfs_wait_marked_extents()
969 	struct btrfs_inode *btree_ino = BTRFS_I(root->fs_info->btree_inode);  in btrfs_wait_marked_extents()
1074 	struct btrfs_root *tree_root = root->fs_info->tree_root;  in update_cowonly_root()
1107 	struct btrfs_fs_info *fs_info = root->fs_info;  in commit_cowonly_roots()  local
1114 	eb = btrfs_lock_root_node(fs_info->tree_root);  in commit_cowonly_roots()
1115 	ret = btrfs_cow_block(trans, fs_info->tree_root, eb, NULL,  in commit_cowonly_roots()
1127 	ret = btrfs_run_dev_stats(trans, root->fs_info);  in commit_cowonly_roots()
1130 	ret = btrfs_run_dev_replace(trans, root->fs_info);  in commit_cowonly_roots()
1133 	ret = btrfs_run_qgroups(trans, root->fs_info);  in commit_cowonly_roots()
1146 	while (!list_empty(&fs_info->dirty_cowonly_roots)) {  in commit_cowonly_roots()
1147 		next = fs_info->dirty_cowonly_roots.next;  in commit_cowonly_roots()
1152 		if (root != fs_info->extent_root)  in commit_cowonly_roots()
1172 	if (!list_empty(&fs_info->dirty_cowonly_roots))  in commit_cowonly_roots()
1175 	list_add_tail(&fs_info->extent_root->dirty_list,  in commit_cowonly_roots()
1177 	btrfs_after_dev_replace_commit(fs_info);  in commit_cowonly_roots()
1189 	spin_lock(&root->fs_info->trans_lock);  in btrfs_add_dead_root()
1191 		list_add_tail(&root->root_list, &root->fs_info->dead_roots);  in btrfs_add_dead_root()
1192 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_add_dead_root()
1202 	struct btrfs_fs_info *fs_info = root->fs_info;  in commit_fs_roots()  local
1207 	spin_lock(&fs_info->fs_roots_radix_lock);  in commit_fs_roots()
1209 		ret = radix_tree_gang_lookup_tag(&fs_info->fs_roots_radix,  in commit_fs_roots()
1217 			radix_tree_tag_clear(&fs_info->fs_roots_radix,  in commit_fs_roots()
1220 			spin_unlock(&fs_info->fs_roots_radix_lock);  in commit_fs_roots()
1239 			err = btrfs_update_root(trans, fs_info->tree_root,  in commit_fs_roots()
1242 			spin_lock(&fs_info->fs_roots_radix_lock);  in commit_fs_roots()
1248 	spin_unlock(&fs_info->fs_roots_radix_lock);  in commit_fs_roots()
1258 	struct btrfs_fs_info *info = root->fs_info;  in btrfs_defrag_root()
1276 		if (btrfs_fs_closing(root->fs_info) || ret != -EAGAIN)  in btrfs_defrag_root()
1279 		if (btrfs_defrag_cancelled(root->fs_info)) {  in btrfs_defrag_root()
1299 				   struct btrfs_fs_info *fs_info,  in create_pending_snapshot()  argument
1304 	struct btrfs_root *tree_root = fs_info->tree_root;  in create_pending_snapshot()
1478 	pending->snap = btrfs_read_fs_root_no_name(root->fs_info, &key);  in create_pending_snapshot()
1516 	ret = btrfs_uuid_tree_add(trans, fs_info->uuid_root, new_uuid.b,  in create_pending_snapshot()
1523 		ret = btrfs_uuid_tree_add(trans, fs_info->uuid_root,  in create_pending_snapshot()
1542 	ret = btrfs_qgroup_prepare_account_extents(trans, fs_info);  in create_pending_snapshot()
1545 	ret = btrfs_qgroup_account_extents(trans, fs_info);  in create_pending_snapshot()
1548 	ret = btrfs_qgroup_inherit(trans, fs_info,  in create_pending_snapshot()
1574 					     struct btrfs_fs_info *fs_info)  in create_pending_snapshots()  argument
1582 		ret = create_pending_snapshot(trans, fs_info, pending);  in create_pending_snapshots()
1594 	super = root->fs_info->super_copy;  in update_super_roots()
1596 	root_item = &root->fs_info->chunk_root->root_item;  in update_super_roots()
1601 	root_item = &root->fs_info->tree_root->root_item;  in update_super_roots()
1607 	if (root->fs_info->update_uuid_tree_gen)  in update_super_roots()
1644 	wait_event(root->fs_info->transaction_blocked_wait,  in wait_current_trans_commit_start()
1656 	wait_event(root->fs_info->transaction_wait,  in wait_current_trans_commit_start_and_unblock()
1681 		__sb_writers_acquired(ac->root->fs_info->sb, SB_FREEZE_FS);  in do_async_commit()
1720 		__sb_writers_release(root->fs_info->sb, SB_FREEZE_FS);  in btrfs_commit_transaction_async()
1748 	spin_lock(&root->fs_info->trans_lock);  in cleanup_transaction()
1758 	if (cur_trans == root->fs_info->running_transaction) {  in cleanup_transaction()
1760 		spin_unlock(&root->fs_info->trans_lock);  in cleanup_transaction()
1764 		spin_lock(&root->fs_info->trans_lock);  in cleanup_transaction()
1766 	spin_unlock(&root->fs_info->trans_lock);  in cleanup_transaction()
1770 	spin_lock(&root->fs_info->trans_lock);  in cleanup_transaction()
1771 	if (cur_trans == root->fs_info->running_transaction)  in cleanup_transaction()
1772 		root->fs_info->running_transaction = NULL;  in cleanup_transaction()
1773 	spin_unlock(&root->fs_info->trans_lock);  in cleanup_transaction()
1776 		sb_end_intwrite(root->fs_info->sb);  in cleanup_transaction()
1784 	btrfs_scrub_cancel(root->fs_info);  in cleanup_transaction()
1789 static inline int btrfs_start_delalloc_flush(struct btrfs_fs_info *fs_info)  in btrfs_start_delalloc_flush()  argument
1791 	if (btrfs_test_opt(fs_info->tree_root, FLUSHONCOMMIT))  in btrfs_start_delalloc_flush()
1792 		return btrfs_start_delalloc_roots(fs_info, 1, -1);  in btrfs_start_delalloc_flush()
1796 static inline void btrfs_wait_delalloc_flush(struct btrfs_fs_info *fs_info)  in btrfs_wait_delalloc_flush()  argument
1798 	if (btrfs_test_opt(fs_info->tree_root, FLUSHONCOMMIT))  in btrfs_wait_delalloc_flush()
1799 		btrfs_wait_ordered_roots(fs_info, -1);  in btrfs_wait_delalloc_flush()
1814 	struct btrfs_inode *btree_ino = BTRFS_I(root->fs_info->btree_inode);  in btrfs_commit_transaction()
1870 		mutex_lock(&root->fs_info->ro_block_group_mutex);  in btrfs_commit_transaction()
1874 		mutex_unlock(&root->fs_info->ro_block_group_mutex);  in btrfs_commit_transaction()
1884 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1886 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1901 	wake_up(&root->fs_info->transaction_blocked_wait);  in btrfs_commit_transaction()
1903 	if (cur_trans->list.prev != &root->fs_info->trans_list) {  in btrfs_commit_transaction()
1908 			spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1917 			spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1920 		spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1925 	ret = btrfs_start_delalloc_flush(root->fs_info);  in btrfs_commit_transaction()
1941 	btrfs_wait_delalloc_flush(root->fs_info);  in btrfs_commit_transaction()
1951 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1953 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
1967 	mutex_lock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
1974 	ret = create_pending_snapshots(trans, root->fs_info);  in btrfs_commit_transaction()
1976 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
1992 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
1998 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2003 	ret = btrfs_qgroup_prepare_account_extents(trans, root->fs_info);  in btrfs_commit_transaction()
2005 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2030 	mutex_lock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2034 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2035 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2043 	btrfs_apply_pending_changes(root->fs_info);  in btrfs_commit_transaction()
2048 	btrfs_free_log_root_tree(trans, root->fs_info);  in btrfs_commit_transaction()
2054 	ret = btrfs_qgroup_account_extents(trans, root->fs_info);  in btrfs_commit_transaction()
2056 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2057 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2063 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2064 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2074 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2075 		mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2081 	cur_trans = root->fs_info->running_transaction;  in btrfs_commit_transaction()
2083 	btrfs_set_root_node(&root->fs_info->tree_root->root_item,  in btrfs_commit_transaction()
2084 			    root->fs_info->tree_root->node);  in btrfs_commit_transaction()
2085 	list_add_tail(&root->fs_info->tree_root->dirty_list,  in btrfs_commit_transaction()
2088 	btrfs_set_root_node(&root->fs_info->chunk_root->root_item,  in btrfs_commit_transaction()
2089 			    root->fs_info->chunk_root->node);  in btrfs_commit_transaction()
2090 	list_add_tail(&root->fs_info->chunk_root->dirty_list,  in btrfs_commit_transaction()
2093 	switch_commit_roots(cur_trans, root->fs_info);  in btrfs_commit_transaction()
2100 	btrfs_set_super_log_root(root->fs_info->super_copy, 0);  in btrfs_commit_transaction()
2101 	btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);  in btrfs_commit_transaction()
2102 	memcpy(root->fs_info->super_for_commit, root->fs_info->super_copy,  in btrfs_commit_transaction()
2103 	       sizeof(*root->fs_info->super_copy));  in btrfs_commit_transaction()
2105 	btrfs_update_commit_device_size(root->fs_info);  in btrfs_commit_transaction()
2113 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2115 	root->fs_info->running_transaction = NULL;  in btrfs_commit_transaction()
2116 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2117 	mutex_unlock(&root->fs_info->reloc_mutex);  in btrfs_commit_transaction()
2119 	wake_up(&root->fs_info->transaction_wait);  in btrfs_commit_transaction()
2123 		btrfs_std_error(root->fs_info, ret,  in btrfs_commit_transaction()
2125 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2131 		mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2139 	mutex_unlock(&root->fs_info->tree_log_mutex);  in btrfs_commit_transaction()
2144 		btrfs_clear_space_info_full(root->fs_info);  in btrfs_commit_transaction()
2146 	root->fs_info->last_trans_committed = cur_trans->transid;  in btrfs_commit_transaction()
2154 	spin_lock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2156 	spin_unlock(&root->fs_info->trans_lock);  in btrfs_commit_transaction()
2162 		sb_end_intwrite(root->fs_info->sb);  in btrfs_commit_transaction()
2173 	if (current != root->fs_info->transaction_kthread &&  in btrfs_commit_transaction()
2174 	    current != root->fs_info->cleaner_kthread)  in btrfs_commit_transaction()
2185 	btrfs_warn(root->fs_info, "Skipping commit of aborted transaction.");  in btrfs_commit_transaction()
2206 	struct btrfs_fs_info *fs_info = root->fs_info;  in btrfs_clean_one_deleted_snapshot()  local
2208 	spin_lock(&fs_info->trans_lock);  in btrfs_clean_one_deleted_snapshot()
2209 	if (list_empty(&fs_info->dead_roots)) {  in btrfs_clean_one_deleted_snapshot()
2210 		spin_unlock(&fs_info->trans_lock);  in btrfs_clean_one_deleted_snapshot()
2213 	root = list_first_entry(&fs_info->dead_roots,  in btrfs_clean_one_deleted_snapshot()
2216 	spin_unlock(&fs_info->trans_lock);  in btrfs_clean_one_deleted_snapshot()
2231 void btrfs_apply_pending_changes(struct btrfs_fs_info *fs_info)  in btrfs_apply_pending_changes()  argument
2236 	prev = xchg(&fs_info->pending_changes, 0);  in btrfs_apply_pending_changes()
2242 		btrfs_set_opt(fs_info->mount_opt, INODE_MAP_CACHE);  in btrfs_apply_pending_changes()
2247 		btrfs_clear_opt(fs_info->mount_opt, INODE_MAP_CACHE);  in btrfs_apply_pending_changes()
2252 		btrfs_debug(fs_info, "pending commit done");  in btrfs_apply_pending_changes()
2256 		btrfs_warn(fs_info,  in btrfs_apply_pending_changes()