On Tue, Oct 21, 2014 at 04:38:01PM +0800, Zhang Haoyu wrote: > If there are still pending i/o while deleting snapshot, > because deleting snapshot is done in non-coroutine context, and > the pending i/o read/write (bdrv_co_do_rw) is done in coroutine context, > so it's possible to cause concurrency problem between above two operations. > Add bdrv_drain_all() to bdrv_snapshot_delete() to avoid this problem. > > Signed-off-by: Zhang Haoyu <zhan...@sangfor.com> > --- > block/snapshot.c | 4 ++++ > 1 file changed, 4 insertions(+)
Thanks, applied to my block tree: https://github.com/stefanha/qemu/commits/block Stefan
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