From nobody Mon Feb 9 02:27:40 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 149865226750255.172284859915294; Wed, 28 Jun 2017 05:17:47 -0700 (PDT) Received: from localhost ([::1]:32878 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dQBuh-0000XD-Sf for importer@patchew.org; Wed, 28 Jun 2017 08:17:43 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60292) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dQBj5-0006QE-2X for qemu-devel@nongnu.org; Wed, 28 Jun 2017 08:05:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dQBj2-00031d-J9 for qemu-devel@nongnu.org; Wed, 28 Jun 2017 08:05:42 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:41998 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 1dQBj2-0002w2-5C for qemu-devel@nongnu.org; Wed, 28 Jun 2017 08:05:40 -0400 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 v5SC5UUH025017; Wed, 28 Jun 2017 15:05:32 +0300 (MSK) From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Wed, 28 Jun 2017 15:05:15 +0300 Message-Id: <20170628120530.31251-16-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20170628120530.31251-1-vsementsov@virtuozzo.com> References: <20170628120530.31251-1-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 v22 15/30] block/dirty-bitmap: add autoload field to BdrvDirtyBitmap 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Mirror AUTO flag from Qcow2 bitmap in BdrvDirtyBitmap. This will be needed in future, to save this flag back to Qcow2 for persistent bitmaps. Signed-off-by: Vladimir Sementsov-Ogievskiy --- block/dirty-bitmap.c | 18 ++++++++++++++++++ block/qcow2-bitmap.c | 2 ++ include/block/dirty-bitmap.h | 2 ++ 3 files changed, 22 insertions(+) diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 17d3068336..06dc7a3ac9 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -52,6 +52,8 @@ struct BdrvDirtyBitmap { Such operations must fail and both the = image and this bitmap must remain unchanged w= hile this flag is set. */ + bool autoload; /* For persistent bitmaps: bitmap must be + autoloaded on image opening */ QLIST_ENTRY(BdrvDirtyBitmap) list; }; =20 @@ -100,6 +102,7 @@ void bdrv_dirty_bitmap_make_anon(BdrvDirtyBitmap *bitma= p) assert(!bdrv_dirty_bitmap_frozen(bitmap)); g_free(bitmap->name); bitmap->name =3D NULL; + bitmap->autoload =3D false; } =20 /* Called with BQL taken. */ @@ -296,6 +299,8 @@ BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriver= State *bs, bitmap->name =3D NULL; successor->name =3D name; bitmap->successor =3D NULL; + successor->autoload =3D bitmap->autoload; + bitmap->autoload =3D false; bdrv_release_dirty_bitmap(bs, bitmap); =20 return successor; @@ -671,3 +676,16 @@ bool bdrv_has_readonly_bitmaps(BlockDriverState *bs) =20 return false; } + +/* Called with BQL taken. */ +void bdrv_dirty_bitmap_set_autoload(BdrvDirtyBitmap *bitmap, bool autoload) +{ + qemu_mutex_lock(bitmap->mutex); + bitmap->autoload =3D autoload; + qemu_mutex_unlock(bitmap->mutex); +} + +bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap) +{ + return bitmap->autoload; +} diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index a21fab8ce8..ee6d8f75a9 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -793,6 +793,8 @@ bool qcow2_load_autoloading_dirty_bitmaps(BlockDriverSt= ate *bs, Error **errp) if (bitmap =3D=3D NULL) { goto fail; } + + bdrv_dirty_bitmap_set_autoload(bitmap, true); bm->flags |=3D BME_FLAG_IN_USE; created_dirty_bitmaps =3D g_slist_append(created_dirty_bitmaps, bitmap); diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index cb43fa37e2..e2fea12b94 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -72,6 +72,7 @@ void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *= bitmap, void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap); =20 void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value); +void bdrv_dirty_bitmap_set_autoload(BdrvDirtyBitmap *bitmap, bool autoload= ); =20 /* Functions that require manual locking. */ void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap); @@ -89,5 +90,6 @@ int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap= ); void bdrv_dirty_bitmap_truncate(BlockDriverState *bs); bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap); bool bdrv_has_readonly_bitmaps(BlockDriverState *bs); +bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap); =20 #endif --=20 2.11.1