From patchwork Sat Feb 25 17:07:50 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 732398 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)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3vVvbd2LJ7z9s74 for ; Sun, 26 Feb 2017 04:09:48 +1100 (AEDT) Received: from localhost ([::1]:43537 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1chfqi-0007rm-Kn for incoming@patchwork.ozlabs.org; Sat, 25 Feb 2017 12:09:36 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44044) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1chfpJ-0006Z8-Jw for qemu-devel@nongnu.org; Sat, 25 Feb 2017 12:08:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1chfpF-0001Tn-JP for qemu-devel@nongnu.org; Sat, 25 Feb 2017 12:08:09 -0500 Received: from mailhub.sw.ru ([195.214.232.25]:17481 helo=relay.sw.ru) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1chfpF-0001Ql-7s for qemu-devel@nongnu.org; Sat, 25 Feb 2017 12:08:05 -0500 Received: from kvm.sw.ru (msk-vpn.virtuozzo.com [195.214.232.6]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id v1PH7weE003504; Sat, 25 Feb 2017 20:08:00 +0300 (MSK) From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Sat, 25 Feb 2017 20:07:50 +0300 Message-Id: <20170225170758.427066-15-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20170225170758.427066-1-vsementsov@virtuozzo.com> References: <20170225170758.427066-1-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: OpenBSD 3.x [fuzzy] X-Received-From: 195.214.232.25 Subject: [Qemu-devel] [PATCH v16 14/22] block: add bdrv_can_store_new_dirty_bitmap X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, famz@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This will be needed to check some restrictions before making bitmap persistent in qmp-block-dirty-bitmap-add (this functionality will be added by future patch) Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Max Reitz Reviewed-by: John Snow --- block.c | 22 ++++++++++++++++++++++ include/block/block.h | 3 +++ include/block/block_int.h | 5 +++++ 3 files changed, 30 insertions(+) diff --git a/block.c b/block.c index 16cf522219..cf9919a5e0 100644 --- a/block.c +++ b/block.c @@ -4093,3 +4093,25 @@ void bdrv_del_child(BlockDriverState *parent_bs, BdrvChild *child, Error **errp) parent_bs->drv->bdrv_del_child(parent_bs, child, errp); } + +bool bdrv_can_store_new_dirty_bitmap(BlockDriverState *bs, const char *name, + uint32_t granularity, Error **errp) +{ + BlockDriver *drv = bs->drv; + + if (!drv) { + error_setg_errno(errp, ENOMEDIUM, + "Can't store persistent bitmaps to %s", + bdrv_get_device_or_node_name(bs)); + return false; + } + + if (!drv->bdrv_can_store_new_dirty_bitmap) { + error_setg_errno(errp, ENOTSUP, + "Can't store persistent bitmaps to %s", + bdrv_get_device_or_node_name(bs)); + return false; + } + + return drv->bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp); +} diff --git a/include/block/block.h b/include/block/block.h index 4e81f2069b..93718ab245 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -551,4 +551,7 @@ void bdrv_add_child(BlockDriverState *parent, BlockDriverState *child, Error **errp); void bdrv_del_child(BlockDriverState *parent, BdrvChild *child, Error **errp); +bool bdrv_can_store_new_dirty_bitmap(BlockDriverState *bs, const char *name, + uint32_t granularity, Error **errp); + #endif diff --git a/include/block/block_int.h b/include/block/block_int.h index 2d92d7edfe..f943a7c24e 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -320,6 +320,11 @@ struct BlockDriver { void (*bdrv_del_child)(BlockDriverState *parent, BdrvChild *child, Error **errp); + bool (*bdrv_can_store_new_dirty_bitmap)(BlockDriverState *bs, + const char *name, + uint32_t granularity, + Error **errp); + QLIST_ENTRY(BlockDriver) list; };