From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46039) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cwNnK-0007yo-59 for qemu-devel@nongnu.org; Fri, 07 Apr 2017 02:54:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cwNnJ-0004Uk-FJ for qemu-devel@nongnu.org; Fri, 07 Apr 2017 02:54:54 -0400 From: Fam Zheng Date: Fri, 7 Apr 2017 14:54:10 +0800 Message-Id: <20170407065414.9143-3-famz@redhat.com> In-Reply-To: <20170407065414.9143-1-famz@redhat.com> References: <20170407065414.9143-1-famz@redhat.com> Subject: [Qemu-devel] [PATCH v2 2/6] block: Assert attached child node has right aio context List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paolo Bonzini , qemu-block@nongnu.org, Ed Swierk , Fam Zheng , Kevin Wolf , Max Reitz , Eric Blake , Stefan Hajnoczi Suggested-by: Kevin Wolf Signed-off-by: Fam Zheng --- block.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/block.c b/block.c index 927ba89..b8a3011 100644 --- a/block.c +++ b/block.c @@ -1752,6 +1752,9 @@ static void bdrv_replace_child_noperm(BdrvChild *child, { BlockDriverState *old_bs = child->bs; + if (old_bs && new_bs) { + assert(bdrv_get_aio_context(old_bs) == bdrv_get_aio_context(new_bs)); + } if (old_bs) { if (old_bs->quiesce_counter && child->role->drained_end) { child->role->drained_end(child); @@ -1852,6 +1855,7 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, bdrv_get_cumulative_perm(parent_bs, &perm, &shared_perm); assert(parent_bs->drv); + assert(bdrv_get_aio_context(parent_bs) == bdrv_get_aio_context(child_bs)); parent_bs->drv->bdrv_child_perm(parent_bs, NULL, child_role, perm, shared_perm, &perm, &shared_perm); -- 2.9.3