From 7db746fd40e71cfca39404f813645eb8b6499559 Mon Sep 17 00:00:00 2001
From: Matt Joiner <anacrolix@gmail.com>
Date: Fri, 15 Aug 2025 11:10:28 +1000
Subject: [PATCH] Add TODO on SEEK_DATA

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

diff --git a/storage/sys_unix.go b/storage/sys_unix.go
index 625f420f..f294598c 100644
--- a/storage/sys_unix.go
+++ b/storage/sys_unix.go
@@ -12,6 +12,7 @@ import (
 
 func seekData(f *os.File, offset int64) (ret int64, err error) {
 	ret, err = unix.Seek(int(f.Fd()), offset, unix.SEEK_DATA)
+	// TODO: Handle filesystems that don't support sparse files.
 	if err == unix.ENXIO {
 		// File has no more data. Treat as short write like io.CopyN.
 		err = io.EOF
-- 
2.51.0