147 lines
4.9 KiB
C
147 lines
4.9 KiB
C
/*
|
|
* 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 list_head ordered_operations;
|
|
struct btrfs_delayed_ref_root delayed_refs;
|
|
int aborted;
|
|
};
|
|
|
|
enum btrfs_trans_type {
|
|
TRANS_START,
|
|
TRANS_JOIN,
|
|
TRANS_USERSPACE,
|
|
TRANS_JOIN_NOLOCK,
|
|
TRANS_ATTACH,
|
|
};
|
|
|
|
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;
|
|
short aborted;
|
|
short adding_csums;
|
|
bool allocating_chunk;
|
|
enum btrfs_trans_type type;
|
|
/*
|
|
* 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 list_head new_bgs;
|
|
};
|
|
|
|
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);
|
|
struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
|
|
int num_items);
|
|
struct btrfs_trans_handle *btrfs_start_transaction_lflush(
|
|
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_attach_transaction(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 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
|