[Qemu-block] [PATCH 0/3] block: fix graph modification

[Vladimir Sementsov-Ogievskiy]

Hi all.

I've found two problems during my developing of backup-top filter.
The first one was already discussed in context of backup-top series,
so, here is patch 01 taken from it, previously it was
03 of [PATCH v5 00/11] backup-top filter driver for backup
(https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg06218.html)
so, here it is marked v6, and it was changed a lot:
 v6: rewrite using GHashTable and GQueue for efficient BFS.

02 is a new fix of bug I've found today, and 03 is a test for both
fixed bugs.

Vladimir Sementsov-Ogievskiy (3):
  block: improve should_update_child
  block: fix bdrv_check_perm for non-tree subgraph
  tests: add test-bdrv-graph-mod

 include/block/block_int.h   |   5 +
 block.c                     |  70 +++++++++++--
 tests/test-bdrv-graph-mod.c | 198 ++++++++++++++++++++++++++++++++++++
 tests/Makefile.include      |   2 +
 4 files changed, 268 insertions(+), 7 deletions(-)
 create mode 100644 tests/test-bdrv-graph-mod.c

-- 
2.18.0