Update s3api_object_handlers.go

weed/s3api/s3api_object_handlers.go

@@ -2698,6 +2698,8 @@ func (s3a *S3ApiServer) createMultipartSSEKMSDecryptedReaderDirect(ctx context.C
 }
 
 // createMultipartSSES3DecryptedReaderDirect creates a reader that decrypts each chunk independently for multipart SSE-S3 objects (direct volume path)
+// Note: encryptedStream parameter is unused (always nil) as this function fetches chunks directly to avoid double I/O.
+// It's kept in the signature for API consistency with non-Direct versions.
 func (s3a *S3ApiServer) createMultipartSSES3DecryptedReaderDirect(ctx context.Context, encryptedStream io.ReadCloser, entry *filer_pb.Entry) (io.Reader, error) {
 	// Sort chunks by offset to ensure correct order
 	chunks := entry.GetChunks()