From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55544) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zn20q-0007Qt-7z for qemu-devel@nongnu.org; Fri, 16 Oct 2015 06:13:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zn20p-0002ay-AX for qemu-devel@nongnu.org; Fri, 16 Oct 2015 06:13:24 -0400 From: Fam Zheng Date: Fri, 16 Oct 2015 18:12:19 +0800 Message-Id: <1444990343-25109-9-git-send-email-famz@redhat.com> In-Reply-To: <1444990343-25109-1-git-send-email-famz@redhat.com> References: <1444990343-25109-1-git-send-email-famz@redhat.com> Subject: [Qemu-devel] [PATCH v3 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 232bc21..015afbf 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1680,6 +1680,8 @@ 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, @@ -1692,7 +1694,6 @@ static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp) return; } - state->bs = bs; state->job = state->bs->job; } @@ -1712,6 +1713,7 @@ 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