* one to make sure that such a concurrent access does not attempt
* to process an already freed BdrvChild.
*/
- aio_context_release(job->job.aio_context);
bdrv_graph_wrlock();
- aio_context_acquire(job->job.aio_context);
while (job->nodes) {
GSList *l = job->nodes;
BdrvChild *c = l->data;
uint64_t perm, uint64_t shared_perm, Error **errp)
{
BdrvChild *c;
- AioContext *ctx = bdrv_get_aio_context(bs);
- bool need_context_ops;
GLOBAL_STATE_CODE();
bdrv_ref(bs);
- need_context_ops = ctx != job->job.aio_context;
-
- if (need_context_ops) {
- if (job->job.aio_context != qemu_get_aio_context()) {
- aio_context_release(job->job.aio_context);
- }
- aio_context_acquire(ctx);
- }
c = bdrv_root_attach_child(bs, name, &child_job, 0, perm, shared_perm, job,
errp);
- if (need_context_ops) {
- aio_context_release(ctx);
- if (job->job.aio_context != qemu_get_aio_context()) {
- aio_context_acquire(job->job.aio_context);
- }
- }
if (c == NULL) {
return -EPERM;
}