From 8edb8ab9ac42e9bfb851b3bc41509e782555f053 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Sat, 16 Jul 2022 16:12:08 -0600
Subject: rethink the SumRun interface to fit diskio.Sequence

---
 lib/btrfs/btrfsvol/addr.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'lib/btrfs')

diff --git a/lib/btrfs/btrfsvol/addr.go b/lib/btrfs/btrfsvol/addr.go
index 76b531d..94320ef 100644
--- a/lib/btrfs/btrfsvol/addr.go
+++ b/lib/btrfs/btrfsvol/addr.go
@@ -56,3 +56,13 @@ func (a QualifiedPhysicalAddr) Cmp(b QualifiedPhysicalAddr) int {
 	}
 	return int(a.Addr - b.Addr)
 }
+
+type _IntAddr[T any] interface {
+	~int64
+	Sub(T) AddrDelta
+	Add(AddrDelta) T
+}
+
+// IntAddr is a type constraint that you can use to accept LogicalAddr
+// or PhysicalAddr.
+type IntAddr[T _IntAddr[T]] _IntAddr[T]
-- 
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