[Qemu-devel] [PATCH RFC 15/16] mirror: Lazily request aio context change permission on target

From: Fam Zheng <famz@redhat.com>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>,
	qemu-block@nongnu.org
Subject: [Qemu-devel] [PATCH RFC 15/16] mirror: Lazily request aio context change permission on target
Date: Tue, 21 Mar 2017 11:16:34 +0800	[thread overview]
Message-ID: <20170321031635.22123-16-famz@redhat.com> (raw)
In-Reply-To: <20170321031635.22123-1-famz@redhat.com>

What's done in the source's context change notifier is moving the
target's context to follow the new one, so we request this permission
here.

Signed-off-by: Fam Zheng <famz@redhat.com>
---
 block/mirror.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/mirror.c b/block/mirror.c
index ed26e8c..168cf60 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -983,6 +983,7 @@ static void mirror_attached_aio_context(BlockJob *job, AioContext *new_context)
 {
     MirrorBlockJob *s = container_of(job, MirrorBlockJob, common);
 
+    blk_request_perm(s->target, BLK_PERM_AIO_CONTEXT_CHANGE, &error_abort);
     blk_set_aio_context(s->target, new_context);
 }
 
-- 
2.9.3
