#define DM_SUSPEND_NOFLUSH_FLAG (1 << 1)
/*
+ * Type of table and mapped_device's mempool
+ */
+#define DM_TYPE_NONE 0
+#define DM_TYPE_BIO_BASED 1
+#define DM_TYPE_REQUEST_BASED 2
+
+/*
* List of devices that a metadevice uses and should open/close.
*/
struct dm_dev_internal {
};
struct dm_table;
+struct dm_md_mempools;
/*-----------------------------------------------------------------
* Internal table functions.
int dm_table_resume_targets(struct dm_table *t);
int dm_table_any_congested(struct dm_table *t, int bdi_bits);
int dm_table_any_busy_target(struct dm_table *t);
+int dm_table_set_type(struct dm_table *t);
+unsigned dm_table_get_type(struct dm_table *t);
+bool dm_table_request_based(struct dm_table *t);
+int dm_table_alloc_md_mempools(struct dm_table *t);
+void dm_table_free_md_mempools(struct dm_table *t);
+struct dm_md_mempools *dm_table_get_md_mempools(struct dm_table *t);
/*
* To check the return value from dm_table_find_target().
*/
#define dm_target_is_valid(t) ((t)->table)
+/*
+ * To check whether the target type is request-based or not (bio-based).
+ */
+#define dm_target_request_based(t) ((t)->type->map_rq != NULL)
+
/*-----------------------------------------------------------------
* A registry of target types.
*---------------------------------------------------------------*/
int dm_split_args(int *argc, char ***argvp, char *input);
/*
+ * Is this mapped_device being deleted?
+ */
+int dm_deleting_md(struct mapped_device *md);
+
+/*
+ * Is this mapped_device suspended?
+ */
+int dm_suspended_md(struct mapped_device *md);
+
+/*
* The device-mapper can be driven through one of two interfaces;
* ioctl or filesystem, depending which patch you have applied.
*/
int dm_open_count(struct mapped_device *md);
int dm_lock_for_deletion(struct mapped_device *md);
-void dm_kobject_uevent(struct mapped_device *md, enum kobject_action action,
- unsigned cookie);
+int dm_kobject_uevent(struct mapped_device *md, enum kobject_action action,
+ unsigned cookie);
+
+int dm_io_init(void);
+void dm_io_exit(void);
int dm_kcopyd_init(void);
void dm_kcopyd_exit(void);
+/*
+ * Mempool operations
+ */
+struct dm_md_mempools *dm_alloc_md_mempools(unsigned type);
+void dm_free_md_mempools(struct dm_md_mempools *pools);
+
#endif