| /* |
| * 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 __TRANSACTION__ |
| #define __TRANSACTION__ |
| |
| struct btrfs_trans_handle { |
| u64 transid; |
| u64 alloc_exclude_start; |
| u64 alloc_exclude_nr; |
| unsigned long blocks_reserved; |
| unsigned long blocks_used; |
| struct btrfs_block_group_cache *block_group; |
| }; |
| |
| static inline struct btrfs_trans_handle * |
| btrfs_start_transaction(struct btrfs_root *root, int num_blocks) |
| { |
| struct btrfs_fs_info *fs_info = root->fs_info; |
| struct btrfs_trans_handle *h = malloc(sizeof(*h)); |
| |
| BUG_ON(root->commit_root); |
| BUG_ON(fs_info->running_transaction); |
| fs_info->running_transaction = h; |
| fs_info->generation++; |
| h->transid = fs_info->generation; |
| h->alloc_exclude_start = 0; |
| h->alloc_exclude_nr = 0; |
| h->blocks_reserved = num_blocks; |
| h->blocks_used = 0; |
| h->block_group = NULL; |
| root->last_trans = h->transid; |
| root->commit_root = root->node; |
| extent_buffer_get(root->node); |
| return h; |
| } |
| |
| static inline void btrfs_free_transaction(struct btrfs_root *root, |
| struct btrfs_trans_handle *handle) |
| { |
| memset(handle, 0, sizeof(*handle)); |
| free(handle); |
| } |
| |
| #endif |