[Qemu-devel] [PATCH 05/20] block: change drain to look only at one child at a time

bdrv_requests_pending is checking children to also wait until internal requests (such as metadata writes) have completed. However, checking children is in general overkill. Children requests can be of two kinds: - requests caused by an operation on bs, e.g. a bdrv_aio_write to bs causing a write

[Qemu-devel] [PATCH 05/20] block: change drain to look only at one child at a time

bdrv_requests_pending is checking children to also wait until internal requests (such as metadata writes) have completed. However, checking children is in general overkill. Children requests can be of two kinds: - requests caused by an operation on bs, e.g. a bdrv_aio_write to bs causing a write