From: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Provide API for the COR-filter removal. Also, drop the filter child
permissions for an inactive state when the filter node is being
removed.
To insert the filter, the block generic layer function
bdrv_insert_node() can be used.
The new function bdrv_cor_filter_drop() may be considered as an
intermediate solution before the QEMU permission update system has
overhauled. Then we are able to implement the API function
bdrv_remove_node() on the block generic layer.
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
block/copy-on-read.h | 32 +++++++++++++++++++++++++
block/copy-on-read.c | 56 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 88 insertions(+)
create mode 100644 block/copy-on-read.h