diff options
Diffstat (limited to 'block_int.h')
| -rw-r--r-- | block_int.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block_int.h b/block_int.h index 7be2988ca7..7946cf66a1 100644 --- a/block_int.h +++ b/block_int.h @@ -131,6 +131,14 @@ struct BlockDriver { 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); + /* + * Efficiently zero a region of the disk image. Typically an image format + * would use a compact metadata representation to implement this. This + * function pointer may be NULL and .bdrv_co_writev() will be called + * instead. + */ + int coroutine_fn (*bdrv_co_write_zeroes)(BlockDriverState *bs, + int64_t sector_num, int nb_sectors); int coroutine_fn (*bdrv_co_discard)(BlockDriverState *bs, int64_t sector_num, int nb_sectors); int coroutine_fn (*bdrv_co_is_allocated)(BlockDriverState *bs, |