From patchwork Tue Sep 17 13:48:42 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Lieven X-Patchwork-Id: 275464 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 9CC7C2C00D8 for ; Tue, 17 Sep 2013 23:52:42 +1000 (EST) Received: from localhost ([::1]:41289 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLvho-0008Ec-Hh for incoming@patchwork.ozlabs.org; Tue, 17 Sep 2013 09:52:40 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55756) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLvgf-0006zS-Qj for qemu-devel@nongnu.org; Tue, 17 Sep 2013 09:51:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VLvgX-0001u4-FJ for qemu-devel@nongnu.org; Tue, 17 Sep 2013 09:51:29 -0400 Received: from mx.ipv6.kamp.de ([2a02:248:0:51::16]:35596 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VLvgX-0001ty-4H for qemu-devel@nongnu.org; Tue, 17 Sep 2013 09:51:21 -0400 Received: (qmail 23387 invoked by uid 89); 17 Sep 2013 13:51:20 -0000 Received: from [82.141.1.145] by client-16-kamp (envelope-from , uid 89) with qmail-scanner-2010/03/19-MF (clamdscan: 0.97.8/17868. hbedv: 8.2.12.120/7.11.102.228. spamassassin: 3.3.1. Clear:RC:1(82.141.1.145):SA:0(-1.2/5.0):. Processed in 3.981069 secs); 17 Sep 2013 13:51:20 -0000 Received: from ns.kamp-intra.net (HELO dns.kamp-intra.net) ([82.141.1.145]) by mx01.kamp.de with SMTP; 17 Sep 2013 13:51:16 -0000 X-GL_Whitelist: yes Received: from lieven-pc.kamp-intra.net (lieven-pc.kamp-intra.net [172.21.12.60]) by dns.kamp-intra.net (Postfix) with ESMTP id EFBDE206AD; Tue, 17 Sep 2013 15:49:14 +0200 (CEST) Received: by lieven-pc.kamp-intra.net (Postfix, from userid 1000) id 772525FA1A; Tue, 17 Sep 2013 15:49:15 +0200 (CEST) From: Peter Lieven To: qemu-devel@nongnu.org Date: Tue, 17 Sep 2013 15:48:42 +0200 Message-Id: <1379425736-11326-7-git-send-email-pl@kamp.de> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1379425736-11326-1-git-send-email-pl@kamp.de> References: <1379425736-11326-1-git-send-email-pl@kamp.de> X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2a02:248:0:51::16 Cc: kwolf@redhat.com, ronniesahlberg@gmail.com, Peter Lieven , stefanha@redhat.com, anthony@codemonkey.ws, pbonzini@redhat.com Subject: [Qemu-devel] [PATCHv2 06/20] block: add discard and write_zeroes limits and alignment to BlockDriverState X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Peter Lieven Reviewed-by: Eric Blake --- include/block/block_int.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/block/block_int.h b/include/block/block_int.h index 85c3474..692b9ed 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -280,6 +280,18 @@ struct BlockDriverState { /* the memory alignment required for the buffers handled by this driver */ int buffer_alignment; + /* maximum number of sectors that can be discarded at once */ + int max_discard; + + /* optimal alignment for discard requests in sectors */ + int64_t discard_alignment; + + /* maximum number of sectors that can zeroized at once */ + int max_write_zeroes; + + /* optimal alignment for write zeroes requests in sectors */ + int64_t write_zeroes_alignment; + /* do we need to tell the quest if we have a volatile write cache? */ int enable_write_cache;