From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752322AbcDZOfb (ORCPT ); Tue, 26 Apr 2016 10:35:31 -0400 Received: from mail-wm0-f46.google.com ([74.125.82.46]:38324 "EHLO mail-wm0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752111AbcDZOfW (ORCPT ); Tue, 26 Apr 2016 10:35:22 -0400 From: "=?UTF-8?q?Javier=20Gonz=C3=A1lez?=" X-Google-Original-From: =?UTF-8?q?Javier=20Gonz=C3=A1lez?= To: mb@lightnvm.io Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, =?UTF-8?q?Javier=20Gonz=C3=A1lez?= Subject: [PATCH] lightnvm: introduce ADDR_PADDED to signal padding Date: Tue, 26 Apr 2016 16:35:16 +0200 Message-Id: <1461681318-29571-1-git-send-email-javier@javigon.com> X-Mailer: git-send-email 2.5.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When REQ_FUA or REQ_FLUSH are sent from the block layer, a target might need to pad some sectors in order to meet device constrains. ADDR_PADDED allows to signal that such sector has been padded. It can be used to mark both lbas and ppas. Signed-off-by: Javier González --- include/linux/lightnvm.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h index 37cda94..5c48207 100644 --- a/include/linux/lightnvm.h +++ b/include/linux/lightnvm.h @@ -214,6 +214,7 @@ struct nvm_tgt_instance { }; #define ADDR_EMPTY (~0ULL) +#define ADDR_PADDED (~0ULL - 1) #define NVM_VERSION_MAJOR 1 #define NVM_VERSION_MINOR 0 -- 2.5.0