diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2016-04-25 11:25:18 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-05-12 15:22:08 +0200 |
| commit | 3fb06697ae30ea59bf245f967a043e60f2aedb17 (patch) | |
| tree | 243b366c61e3b5de0d98f9dc1f32eff3bbe2bd23 /include | |
| parent | cab3a3563c5484f0bedbf5f78ab4a49e71a81fe7 (diff) | |
block: Introduce .bdrv_co_preadv/pwritev BlockDriver function
Many parts of the block layer are already byte granularity. The block
driver interface, however, was still missing an interface that allows
making use of this. This patch introduces a new BlockDriver interface,
which is based on coroutines, vectored, has flags and uses a byte
granularity. This is now the preferred interface for new drivers.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/block/block_int.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h index 804bc1d60b..565f795758 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -153,10 +153,14 @@ struct BlockDriver { int coroutine_fn (*bdrv_co_readv)(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); + int coroutine_fn (*bdrv_co_preadv)(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, QEMUIOVector *qiov, int flags); int coroutine_fn (*bdrv_co_writev)(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); int coroutine_fn (*bdrv_co_writev_flags)(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov, int flags); + int coroutine_fn (*bdrv_co_pwritev)(BlockDriverState *bs, + uint64_t offset, uint64_t bytes, QEMUIOVector *qiov, int flags); int supported_write_flags; |