enum BdrvTrackedRequestType {
BDRV_TRACKED_READ,
BDRV_TRACKED_WRITE,
- BDRV_TRACKED_FLUSH,
- BDRV_TRACKED_IOCTL,
BDRV_TRACKED_DISCARD,
};
BlockAIOCB *(*bdrv_aio_ioctl)(BlockDriverState *bs,
unsigned long int req, void *buf,
BlockCompletionFunc *cb, void *opaque);
+ int coroutine_fn (*bdrv_co_ioctl)(BlockDriverState *bs,
+ unsigned long int req, void *buf);
/* List of options for creating images, terminated by name == NULL */
QemuOptsList *create_opts;
note this is a reference count */
CoQueue flush_queue; /* Serializing flush queue */
- BdrvTrackedRequest *active_flush_req; /* Flush request in flight */
+ bool active_flush_req; /* Flush request in flight? */
unsigned int write_gen; /* Current data generation */
unsigned int flushed_gen; /* Flushed write generation */
/* Callback before write request is processed */
NotifierWithReturnList before_write_notifiers;
- /* number of in-flight serialising requests */
+ /* number of in-flight requests; overall and serialising */
+ unsigned int in_flight;
unsigned int serialising_in_flight;
+ bool wakeup;
+
/* Offset after the highest byte written to */
uint64_t wr_highest_offset;
void (*aio_context_detached)(void *),
void *opaque);
+/**
+ * bdrv_wakeup:
+ * @bs: The BlockDriverState for which an I/O operation has been completed.
+ *
+ * Wake up the main thread if it is waiting on BDRV_POLL_WHILE. During
+ * synchronous I/O on a BlockDriverState that is attached to another
+ * I/O thread, the main thread lets the I/O thread's event loop run,
+ * waiting for the I/O operation to complete. A bdrv_wakeup will wake
+ * up the main thread if necessary.
+ *
+ * Manual calls to bdrv_wakeup are rarely necessary, because
+ * bdrv_dec_in_flight already calls it.
+ */
+void bdrv_wakeup(BlockDriverState *bs);
+
#ifdef _WIN32
int is_windows_drive(const char *filename);
#endif
void bdrv_clear_dirty_bitmap(BdrvDirtyBitmap *bitmap, HBitmap **out);
void bdrv_undo_clear_dirty_bitmap(BdrvDirtyBitmap *bitmap, HBitmap *in);
+void bdrv_inc_in_flight(BlockDriverState *bs);
+void bdrv_dec_in_flight(BlockDriverState *bs);
+
void blockdev_close_all_bdrv_states(void);
#endif /* BLOCK_INT_H */