diff options
Diffstat (limited to 'block.h')
| -rw-r--r-- | block.h | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -70,6 +70,7 @@ typedef struct BlockDevOps { #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */ #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */ #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */ +#define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */ #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH) @@ -98,6 +99,11 @@ void bdrv_info(Monitor *mon, QObject **ret_data); void bdrv_stats_print(Monitor *mon, const QObject *data); void bdrv_info_stats(Monitor *mon, QObject **ret_data); +/* disk I/O throttling */ +void bdrv_io_limits_enable(BlockDriverState *bs); +void bdrv_io_limits_disable(BlockDriverState *bs); +bool bdrv_io_limits_enabled(BlockDriverState *bs); + void bdrv_init(void); void bdrv_init_with_whitelist(void); BlockDriver *bdrv_find_protocol(const char *filename); @@ -138,6 +144,8 @@ 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 coroutine_fn bdrv_co_is_allocated(BlockDriverState *bs, int64_t sector_num, + int nb_sectors, int *pnum); int bdrv_truncate(BlockDriverState *bs, int64_t offset); int64_t bdrv_getlength(BlockDriverState *bs); int64_t bdrv_get_allocated_file_size(BlockDriverState *bs); @@ -206,6 +214,7 @@ int bdrv_flush(BlockDriverState *bs); int coroutine_fn bdrv_co_flush(BlockDriverState *bs); void bdrv_flush_all(void); void bdrv_close_all(void); +void bdrv_drain_all(void); int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors); @@ -305,6 +314,9 @@ void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, int nr_sectors); 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_set_in_use(BlockDriverState *bs, int in_use); int bdrv_in_use(BlockDriverState *bs); |