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   1 #ifndef __TRANSACTION__
   2 #define __TRANSACTION__
   3 #include "btrfs_inode.h"
   4
   5 struct btrfs_transaction {
   6         u64 transid;
   7         unsigned long num_writers;
   8         int in_commit;
   9         int use_count;
  10         int commit_done;
  11         int magic;
  12         struct list_head list;
  13         struct radix_tree_root dirty_pages;
  14         wait_queue_head_t writer_wait;
  15         wait_queue_head_t commit_wait;
  16 };
  17
  18 struct btrfs_trans_handle {
  19         int magic;
  20         u64 transid;
  21         unsigned long blocks_reserved;
  22         unsigned long blocks_used;
  23         struct btrfs_transaction *transaction;
  24         struct btrfs_block_group_cache *block_group;
  25         int magic2;
  26 };
  27
  28
  29 static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
  30                                                struct inode *inode)
  31 {
  32         trans->block_group = BTRFS_I(inode)->block_group;
  33 }
  34
  35 static inline void btrfs_update_inode_block_group(struct
  36                                                   btrfs_trans_handle *trans,
  37                                                   struct inode *inode)
  38 {
  39         BTRFS_I(inode)->block_group = trans->block_group;
  40 }
  41
  42 int btrfs_end_transaction(struct btrfs_trans_handle *trans,
  43                           struct btrfs_root *root);
  44 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
  45                                                    int num_blocks);
  46 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
  47                                      struct btrfs_root *root);
  48 int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
  49                             struct btrfs_root *root);
  50 #endif