diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2011-07-14 17:27:13 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-08-02 15:53:40 +0200 |
| commit | da1fa91d6cca8a6d3da9c2b222fa485429db297c (patch) | |
| tree | c77f342d36c65fb1773c1f9c563f2d5b531e6f4e /block_int.h | |
| parent | 5e3840ce24040cbd1957008489cbc136c43ca391 (diff) | |
block: Add bdrv_co_readv/writev
Add new block driver callbacks bdrv_co_readv/writev, which work on a
QEMUIOVector like bdrv_aio_*, but don't need a callback. The function may only
be called inside a coroutine, so a block driver implementing this interface can
yield instead of blocking during I/O.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block_int.h')
| -rw-r--r-- | block_int.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h index efefbee289..f6d02b38a7 100644 --- a/block_int.h +++ b/block_int.h @@ -27,6 +27,7 @@ #include "block.h" #include "qemu-option.h" #include "qemu-queue.h" +#include "qemu-coroutine.h" #define BLOCK_FLAG_ENCRYPT 1 #define BLOCK_FLAG_COMPAT6 4 @@ -77,6 +78,11 @@ struct BlockDriver { int (*bdrv_discard)(BlockDriverState *bs, int64_t sector_num, int nb_sectors); + int coroutine_fn (*bdrv_co_readv)(BlockDriverState *bs, + int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); + int coroutine_fn (*bdrv_co_writev)(BlockDriverState *bs, + int64_t sector_num, int nb_sectors, QEMUIOVector *qiov); + int (*bdrv_aio_multiwrite)(BlockDriverState *bs, BlockRequest *reqs, int num_reqs); int (*bdrv_merge_requests)(BlockDriverState *bs, BlockRequest* a, |