From patchwork Wed Feb 6 12:32:23 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Beno=C3=AEt_Canet?= X-Patchwork-Id: 218710 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 8A66A2C02EB for ; Thu, 7 Feb 2013 05:15:08 +1100 (EST) Received: from localhost ([::1]:58681 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1U39WS-0005YK-1s for incoming@patchwork.ozlabs.org; Wed, 06 Feb 2013 13:15:04 -0500 Received: from eggs.gnu.org ([208.118.235.92]:38538) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1U39WH-0005Y9-U9 for qemu-devel@nongnu.org; Wed, 06 Feb 2013 13:14:56 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1U39WE-0006xR-FO for qemu-devel@nongnu.org; Wed, 06 Feb 2013 13:14:53 -0500 Received: from nodalink.pck.nerim.net ([62.212.105.220]:43785 helo=paradis.irqsave.net) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1U34Dl-00060L-PK for qemu-devel@nongnu.org; Wed, 06 Feb 2013 07:35:25 -0500 Received: by paradis.irqsave.net (Postfix, from userid 1002) id 2F1B387430E; Wed, 6 Feb 2013 13:35:25 +0100 (CET) Received: from localhost.localdomain (unknown [192.168.77.1]) by paradis.irqsave.net (Postfix) with ESMTP id F0B1D874353; Wed, 6 Feb 2013 13:31:40 +0100 (CET) From: =?UTF-8?q?Beno=C3=AEt=20Canet?= To: qemu-devel@nongnu.org Date: Wed, 6 Feb 2013 13:32:23 +0100 Message-Id: <1360153946-9617-5-git-send-email-benoit@irqsave.net> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1360153946-9617-1-git-send-email-benoit@irqsave.net> References: <1360153946-9617-1-git-send-email-benoit@irqsave.net> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 62.212.105.220 Cc: kwolf@redhat.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= , stefanha@redhat.com Subject: [Qemu-devel] [RFC V2 4/7] block: Add bdrv_dedup_control to start and stop deduplication. 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 --- block.c | 16 ++++++++++++++++ include/block/block.h | 1 + 2 files changed, 17 insertions(+) diff --git a/block.c b/block.c index e9d7764..3f0bccc 100644 --- a/block.c +++ b/block.c @@ -4306,6 +4306,22 @@ bool bdrv_has_dedup(BlockDriverState *bs) return bdi.has_dedup; } +/* Start or stop deduplication given the value of enable */ +int bdrv_dedup_control(BlockDriverState *bs, const bool enable) +{ + BlockDriver *drv = bs->drv; + + if (!bdrv_has_dedup(bs)) { + return -EINVAL; + } + + if (drv && drv->bdrv_dedup_control) { + drv->bdrv_dedup_control(bs, enable); + } + + return 0; +} + /* needed for generic scsi interface */ int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) diff --git a/include/block/block.h b/include/block/block.h index 55549ae..e06c571 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -307,6 +307,7 @@ int bdrv_is_inserted(BlockDriverState *bs); int bdrv_media_changed(BlockDriverState *bs); void bdrv_lock_medium(BlockDriverState *bs, bool locked); bool bdrv_has_dedup(BlockDriverState *bs); +int bdrv_dedup_control(BlockDriverState *bs, const bool enable); void bdrv_eject(BlockDriverState *bs, bool eject_flag); const char *bdrv_get_format_name(BlockDriverState *bs); BlockDriverState *bdrv_find(const char *name);