From d71d8db5eb2dc18af20750acf7679e8eb92fb8d4 Mon Sep 17 00:00:00 2001
From: Matt Joiner <anacrolix@gmail.com>
Date: Wed, 7 May 2025 13:59:35 +1000
Subject: [PATCH] Fix ReadAt after close on mmap span not returning

---
 mmap_span/mmap_span.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mmap_span/mmap_span.go b/mmap_span/mmap_span.go
index 4ba2efdd..10bbfb67 100644
--- a/mmap_span/mmap_span.go
+++ b/mmap_span/mmap_span.go
@@ -60,6 +60,7 @@ func (ms *MMapSpan) ReadAt(p []byte, off int64) (n int, err error) {
 	defer ms.mu.RUnlock()
 	if ms.closed {
 		err = fs.ErrClosed
+		return
 	}
 	n = ms.locateCopy(func(a, b []byte) (_, _ []byte) { return a, b }, p, off)
 	if n != len(p) {
-- 
2.51.0