Btrfs: transaction rework

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 19 insertions, 16 deletions

diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index 9ab27b7..7e6c08a 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -1,27 +1,30 @@
 #ifndef __TRANSACTION__
 #define __TRANSACTION__
 
+struct btrfs_transaction {
+	u64 transid;
+	unsigned long num_writers;
+	int in_commit;
+	int use_count;
+	int commit_done;
+	wait_queue_head_t writer_wait;
+	wait_queue_head_t commit_wait;
+};
+
 struct btrfs_trans_handle {
 	u64 transid;
 	unsigned long blocks_reserved;
 	unsigned long blocks_used;
+	struct btrfs_transaction *transaction;
 };
 
-static inline struct btrfs_trans_handle *
-btrfs_start_transaction(struct btrfs_root *root, int num_blocks)
-{
-	struct btrfs_trans_handle *h = kmalloc(sizeof(*h), GFP_NOFS);
-	h->transid = root->root_key.offset;
-	h->blocks_reserved = num_blocks;
-	h->blocks_used = 0;
-	return h;
-}
-
-static inline void btrfs_free_transaction(struct btrfs_root *root,
-					  struct btrfs_trans_handle *handle)
-{
-	memset(handle, 0, sizeof(*handle));
-	kfree(handle);
-}
 
+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_blocks);
+int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
+				     struct btrfs_root *root);
+int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
+			    struct btrfs_root *root);
 #endif