| /* |
| * Copyright (C) 2007 Oracle. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public |
| * License v2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public |
| * License along with this program; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 021110-1307, USA. |
| */ |
| |
| #ifndef __BTRFS_TRANSACTION__ |
| #define __BTRFS_TRANSACTION__ |
| #include "btrfs_inode.h" |
| #include "delayed-ref.h" |
| #include "ctree.h" |
| |
| struct btrfs_transaction { |
| u64 transid; |
| /* |
| * total writers in this transaction, it must be zero before the |
| * transaction can end |
| */ |
| atomic_t num_writers; |
| atomic_t use_count; |
| |
| unsigned long num_joined; |
| |
| spinlock_t commit_lock; |
| int in_commit; |
| int commit_done; |
| int blocked; |
| struct list_head list; |
| struct extent_io_tree dirty_pages; |
| unsigned long start_time; |
| wait_queue_head_t writer_wait; |
| wait_queue_head_t commit_wait; |
| struct list_head pending_snapshots; |
| struct btrfs_delayed_ref_root delayed_refs; |
| int aborted; |
| }; |
| |
| struct btrfs_trans_handle { |
| u64 transid; |
| u64 bytes_reserved; |
| u64 qgroup_reserved; |
| unsigned long use_count; |
| unsigned long blocks_reserved; |
| unsigned long blocks_used; |
| unsigned long delayed_ref_updates; |
| struct btrfs_transaction *transaction; |
| struct btrfs_block_rsv *block_rsv; |
| struct btrfs_block_rsv *orig_rsv; |
| int aborted; |
| int adding_csums; |
| /* |
| * this root is only needed to validate that the root passed to |
| * start_transaction is the same as the one passed to end_transaction. |
| * Subvolume quota depends on this |
| */ |
| struct btrfs_root *root; |
| struct seq_list delayed_ref_elem; |
| struct list_head qgroup_ref_list; |
| }; |
| |
| struct btrfs_pending_snapshot { |
| struct dentry *dentry; |
| struct btrfs_root *root; |
| struct btrfs_root *snap; |
| struct btrfs_qgroup_inherit *inherit; |
| /* block reservation for the operation */ |
| struct btrfs_block_rsv block_rsv; |
| /* extra metadata reseration for relocation */ |
| int error; |
| bool readonly; |
| struct list_head list; |
| }; |
| |
| static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans, |
| struct inode *inode) |
| { |
| BTRFS_I(inode)->last_trans = trans->transaction->transid; |
| BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid; |
| BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->root->last_log_commit; |
| } |
| |
| int btrfs_end_transaction(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| int btrfs_end_transaction_nolock(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root, |
| int num_items); |
| struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root); |
| struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root); |
| struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *root); |
| int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid); |
| int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| |
| int btrfs_add_dead_root(struct btrfs_root *root); |
| int btrfs_defrag_root(struct btrfs_root *root, int cacheonly); |
| int btrfs_clean_old_snapshots(struct btrfs_root *root); |
| int btrfs_commit_transaction(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root, |
| int wait_for_unblock); |
| int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| int btrfs_end_transaction_dmeta(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| int btrfs_should_end_transaction(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| void btrfs_throttle(struct btrfs_root *root); |
| int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans, |
| struct btrfs_root *root); |
| int btrfs_write_and_wait_marked_extents(struct btrfs_root *root, |
| struct extent_io_tree *dirty_pages, int mark); |
| int btrfs_write_marked_extents(struct btrfs_root *root, |
| struct extent_io_tree *dirty_pages, int mark); |
| int btrfs_wait_marked_extents(struct btrfs_root *root, |
| struct extent_io_tree *dirty_pages, int mark); |
| int btrfs_transaction_blocked(struct btrfs_fs_info *info); |
| int btrfs_transaction_in_commit(struct btrfs_fs_info *info); |
| void put_transaction(struct btrfs_transaction *transaction); |
| #endif |