int n_writes; /* number of requests attached before this barrier */
};
-struct drbd_request;
-
-/* These Tl_epoch_entries may be in one of 6 lists:
- active_ee .. data packet being written
- sync_ee .. syncer block being written
- done_ee .. block written, need to send P_WRITE_ACK
- read_ee .. [RS]P_DATA_REQUEST being read
-*/
-
struct drbd_epoch {
struct list_head list;
unsigned int barrier_nr;
enum write_ordering_e write_ordering;
struct list_head active_ee; /* IO in progress (P_DATA gets written to disk) */
struct list_head sync_ee; /* IO in progress (P_RS_DATA_REPLY gets written to disk) */
- struct list_head done_ee; /* send ack */
- struct list_head read_ee; /* IO in progress (any read) */
+ struct list_head done_ee; /* need to send P_WRITE_ACK */
+ struct list_head read_ee; /* [RS]P_DATA_REQUEST being read */
struct list_head net_ee; /* zero-copy network send in progress */
int next_barrier_nr;