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[RFC,05/16] backup: Request BLK_PERM_AIO_CONTEXT_CHANGE on target

Message ID 20170321031635.22123-6-famz@redhat.com
State New
Headers show

Commit Message

Fam Zheng March 21, 2017, 3:16 a.m. UTC 
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/backup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/block/backup.c b/block/backup.c
index a4fb288..546c5c5 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -636,7 +636,7 @@  BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
     }
 
     /* The target must match the source in size, so no resize here either */
-    job->target = blk_new(BLK_PERM_WRITE,
+    job->target = blk_new(BLK_PERM_WRITE | BLK_PERM_AIO_CONTEXT_CHANGE,
                           BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE |
                           BLK_PERM_WRITE_UNCHANGED | BLK_PERM_GRAPH_MOD);
     ret = blk_insert_bs(job->target, target, errp);