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Wed, 06 Jun 2018 18:24:52 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Wed, 06 Jun 2018 18:24:52 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'jsnow@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 3/5] qmp: transaction support for x-block-dirty-bitmap-enable/disable 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: Kevin Wolf , Vladimir Sementsov-Ogievskiy , Fam Zheng , Markus Armbruster , Max Reitz , John Snow 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" From: Vladimir Sementsov-Ogievskiy Signed-off-by: Vladimir Sementsov-Ogievskiy [Added x- prefix. --js] Signed-off-by: John Snow Reviewed-by: Jeff Cody --- blockdev.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++= +++- qapi/transaction.json | 4 +++ 2 files changed, 84 insertions(+), 1 deletion(-) diff --git a/blockdev.c b/blockdev.c index fb402edc94..af705738cd 100644 --- a/blockdev.c +++ b/blockdev.c @@ -2052,6 +2052,7 @@ typedef struct BlockDirtyBitmapState { BlockDriverState *bs; HBitmap *backup; bool prepared; + bool was_enabled; } BlockDirtyBitmapState; =20 static void block_dirty_bitmap_add_prepare(BlkActionState *common, @@ -2151,6 +2152,74 @@ static void block_dirty_bitmap_clear_commit(BlkActio= nState *common) hbitmap_free(state->backup); } =20 +static void block_dirty_bitmap_enable_prepare(BlkActionState *common, + Error **errp) +{ + BlockDirtyBitmap *action; + BlockDirtyBitmapState *state =3D DO_UPCAST(BlockDirtyBitmapState, + common, common); + + if (action_check_completion_mode(common, errp) < 0) { + return; + } + + action =3D common->action->u.x_block_dirty_bitmap_enable.data; + state->bitmap =3D block_dirty_bitmap_lookup(action->node, + action->name, + NULL, + errp); + if (!state->bitmap) { + return; + } + + state->was_enabled =3D bdrv_dirty_bitmap_enabled(state->bitmap); + bdrv_enable_dirty_bitmap(state->bitmap); +} + +static void block_dirty_bitmap_enable_abort(BlkActionState *common) +{ + BlockDirtyBitmapState *state =3D DO_UPCAST(BlockDirtyBitmapState, + common, common); + + if (!state->was_enabled) { + bdrv_disable_dirty_bitmap(state->bitmap); + } +} + +static void block_dirty_bitmap_disable_prepare(BlkActionState *common, + Error **errp) +{ + BlockDirtyBitmap *action; + BlockDirtyBitmapState *state =3D DO_UPCAST(BlockDirtyBitmapState, + common, common); + + if (action_check_completion_mode(common, errp) < 0) { + return; + } + + action =3D common->action->u.x_block_dirty_bitmap_disable.data; + state->bitmap =3D block_dirty_bitmap_lookup(action->node, + action->name, + NULL, + errp); + if (!state->bitmap) { + return; + } + + state->was_enabled =3D bdrv_dirty_bitmap_enabled(state->bitmap); + bdrv_disable_dirty_bitmap(state->bitmap); +} + +static void block_dirty_bitmap_disable_abort(BlkActionState *common) +{ + BlockDirtyBitmapState *state =3D DO_UPCAST(BlockDirtyBitmapState, + common, common); + + if (state->was_enabled) { + bdrv_enable_dirty_bitmap(state->bitmap); + } +} + static void abort_prepare(BlkActionState *common, Error **errp) { error_setg(errp, "Transaction aborted using Abort action"); @@ -2211,7 +2280,17 @@ static const BlkActionOps actions[] =3D { .prepare =3D block_dirty_bitmap_clear_prepare, .commit =3D block_dirty_bitmap_clear_commit, .abort =3D block_dirty_bitmap_clear_abort, - } + }, + [TRANSACTION_ACTION_KIND_X_BLOCK_DIRTY_BITMAP_ENABLE] =3D { + .instance_size =3D sizeof(BlockDirtyBitmapState), + .prepare =3D block_dirty_bitmap_enable_prepare, + .abort =3D block_dirty_bitmap_enable_abort, + }, + [TRANSACTION_ACTION_KIND_X_BLOCK_DIRTY_BITMAP_DISABLE] =3D { + .instance_size =3D sizeof(BlockDirtyBitmapState), + .prepare =3D block_dirty_bitmap_disable_prepare, + .abort =3D block_dirty_bitmap_disable_abort, + } }; =20 /** diff --git a/qapi/transaction.json b/qapi/transaction.json index bd312792da..d7e4274550 100644 --- a/qapi/transaction.json +++ b/qapi/transaction.json @@ -46,6 +46,8 @@ # - @abort: since 1.6 # - @block-dirty-bitmap-add: since 2.5 # - @block-dirty-bitmap-clear: since 2.5 +# - @x-block-dirty-bitmap-enable: since 3.0 +# - @x-block-dirty-bitmap-disable: since 3.0 # - @blockdev-backup: since 2.3 # - @blockdev-snapshot: since 2.5 # - @blockdev-snapshot-internal-sync: since 1.7 @@ -59,6 +61,8 @@ 'abort': 'Abort', 'block-dirty-bitmap-add': 'BlockDirtyBitmapAdd', 'block-dirty-bitmap-clear': 'BlockDirtyBitmap', + 'x-block-dirty-bitmap-enable': 'BlockDirtyBitmap', + 'x-block-dirty-bitmap-disable': 'BlockDirtyBitmap', 'blockdev-backup': 'BlockdevBackup', 'blockdev-snapshot': 'BlockdevSnapshot', 'blockdev-snapshot-internal-sync': 'BlockdevSnapshotInternal', --=20 2.14.3