Changes from v1: * Rather than allow insertion when bs->device_listtqe_prev points to a NULL entry, make sure than we follow the block scheme of enforcing bs->device_list->tqe_prev is NULL upon deletion. (Thanks Max!)
Bug #1300209 is a regression in 2.5, introduced during the change away from bdrv_swap(). When we change the parent backing link (change_parent_backing_link), we must also accomodate non-NULL tqe_prev pointers that point to a NULL entry. Please see patch #1 for more details. Jeff Cody (2): block: set device_list.tqe_prev to NULL on BDS removal block: qemu-iotests - add test for snapshot, commit, snapshot bug block.c | 24 ++++++---- blockdev.c | 3 +- include/block/block.h | 1 + tests/qemu-iotests/143 | 114 +++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/143.out | 24 ++++++++++ tests/qemu-iotests/group | 1 + 6 files changed, 155 insertions(+), 12 deletions(-) create mode 100755 tests/qemu-iotests/143 create mode 100644 tests/qemu-iotests/143.out -- 1.9.3
