diff options
| author | Fam Zheng <famz@redhat.com> | 2013-08-23 09:14:46 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-09-06 15:25:08 +0200 |
| commit | 9fcb025146676ab376e6159b58f5a5ddb67bf03c (patch) | |
| tree | 1b642880bf42f0943ae9533b1fa78f933022b183 /include/block | |
| parent | 13c91cb7e28b47f5c4227f7e88a1378570117704 (diff) | |
block: implement reference count for BlockDriverState
Introduce bdrv_ref/bdrv_unref to manage the lifecycle of
BlockDriverState. They are unused for now but will used to replace
bdrv_delete() later.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include/block')
| -rw-r--r-- | include/block/block.h | 2 | ||||
| -rw-r--r-- | include/block/block_int.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/block/block.h b/include/block/block.h index 6207ff2cec..f24e1fffe2 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -355,6 +355,8 @@ int64_t bdrv_get_dirty_count(BlockDriverState *bs); void bdrv_enable_copy_on_read(BlockDriverState *bs); void bdrv_disable_copy_on_read(BlockDriverState *bs); +void bdrv_ref(BlockDriverState *bs); +void bdrv_unref(BlockDriverState *bs); void bdrv_set_in_use(BlockDriverState *bs, int in_use); int bdrv_in_use(BlockDriverState *bs); diff --git a/include/block/block_int.h b/include/block/block_int.h index c3c9c61fa5..b9212b8331 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -277,6 +277,7 @@ struct BlockDriverState { BlockDeviceIoStatus iostatus; char device_name[32]; HBitmap *dirty_bitmap; + int refcnt; int in_use; /* users other than guest access, eg. block migration */ QTAILQ_ENTRY(BlockDriverState) list; |