diff options
| author | Fam Zheng <famz@redhat.com> | 2014-09-11 13:41:09 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-09-22 11:38:58 +0100 |
| commit | 02c50efe08736116048d5fc355043080f4d5859c (patch) | |
| tree | c92a8394f0ae9d0378398f830f3396e0028520cc /include/block | |
| parent | f197fe2b2c77259b6570620f288d905bfa38e2da (diff) | |
block: Add bdrv_aio_cancel_async
This is the async version of bdrv_aio_cancel, which doesn't block the
caller. It guarantees that the cb is called either before returning or
some time later.
bdrv_aio_cancel can base on bdrv_aio_cancel_async, later we can convert
all .io_cancel implementations to .io_cancel_async, and the aio_poll is
the common logic. In the end, .io_cancel can be dropped.
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/aio.h | 2 | ||||
| -rw-r--r-- | include/block/block.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/block/aio.h b/include/block/aio.h index 2626fc745f..ad361e34c7 100644 --- a/include/block/aio.h +++ b/include/block/aio.h @@ -27,6 +27,8 @@ typedef void BlockDriverCompletionFunc(void *opaque, int ret); typedef struct AIOCBInfo { void (*cancel)(BlockDriverAIOCB *acb); + void (*cancel_async)(BlockDriverAIOCB *acb); + AioContext *(*get_aio_context)(BlockDriverAIOCB *acb); size_t aiocb_size; } AIOCBInfo; diff --git a/include/block/block.h b/include/block/block.h index 07d6d8e67e..3318f0dfbe 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -337,6 +337,7 @@ BlockDriverAIOCB *bdrv_aio_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque); void bdrv_aio_cancel(BlockDriverAIOCB *acb); +void bdrv_aio_cancel_async(BlockDriverAIOCB *acb); typedef struct BlockRequest { /* Fields to be filled by multiwrite caller */ |