Btrfs: transaction handles everywhere
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
new file mode 100644
index 0000000..3adb6e6
--- /dev/null
+++ b/fs/btrfs/transaction.h
@@ -0,0 +1,27 @@
+#ifndef __TRANSACTION__
+#define __TRANSACTION__
+
+struct btrfs_trans_handle {
+ u64 transid;
+ unsigned long blocks_reserved;
+ unsigned long blocks_used;
+};
+
+static inline struct btrfs_trans_handle *
+btrfs_start_transaction(struct btrfs_root *root, int num_blocks)
+{
+ struct btrfs_trans_handle *h = malloc(sizeof(*h));
+ 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));
+ free(handle);
+}
+
+#endif