From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60103) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZoPIu-00036B-PB for qemu-devel@nongnu.org; Tue, 20 Oct 2015 01:17:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZoPIu-000602-1S for qemu-devel@nongnu.org; Tue, 20 Oct 2015 01:17:44 -0400 From: Fam Zheng Date: Tue, 20 Oct 2015 13:16:59 +0800 Message-Id: <1445318223-30055-9-git-send-email-famz@redhat.com> In-Reply-To: <1445318223-30055-1-git-send-email-famz@redhat.com> References: <1445318223-30055-1-git-send-email-famz@redhat.com> Subject: [Qemu-devel] [PATCH v4 08/12] block: Add "drained begin/end" for transactional blockdev-backup List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, pbonzini@redhat.com, stefanha@redhat.com, qemu-block@nongnu.org Similar to the previous patch, make sure that external events are not dispatched during transaction operations. Signed-off-by: Fam Zheng --- blockdev.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/blockdev.c b/blockdev.c index e3e68e6..6ab98e3 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1678,6 +1678,8 @@ static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp) return; } aio_context_acquire(state->aio_context); + state->bs = bs; + bdrv_drained_begin(bs); qmp_blockdev_backup(backup->device, backup->target, backup->sync, @@ -1690,7 +1692,6 @@ static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp) return; } - state->bs = bs; state->job = state->bs->job; } @@ -1710,6 +1711,7 @@ static void blockdev_backup_clean(BlkTransactionState *common) BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); if (state->aio_context) { + bdrv_drained_end(state->bs); aio_context_release(state->aio_context); } } -- 2.4.3