From 256101768e271bd563ad0d0dcc20f63ea5ce873a Mon Sep 17 00:00:00 2001
From: Matt Joiner <anacrolix@gmail.com>
Date: Wed, 28 Apr 2021 21:18:01 +1000
Subject: [PATCH] piece resource storage: Do sized puts for WriteAts if
 possible

---
 storage/piece_resource.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/storage/piece_resource.go b/storage/piece_resource.go
index 66d877fb..8df44389 100644
--- a/storage/piece_resource.go
+++ b/storage/piece_resource.go
@@ -191,7 +191,11 @@ func (s piecePerResourcePiece) WriteAt(b []byte, off int64) (n int, err error) {
 		panic(err)
 	}
 	r := bytes.NewReader(b)
-	err = i.Put(r)
+	if sp, ok := i.(SizedPutter); ok {
+		err = sp.PutSized(r, r.Size())
+	} else {
+		err = i.Put(r)
+	}
 	n = len(b) - r.Len()
 	return
 }
-- 
2.48.1