drbd: The new, smarter resync speed controller

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index fd2cdd45f155..facb72ccc56b 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -928,6 +928,12 @@ enum write_ordering_e {
         WO_bio_barrier
 };
 
+struct fifo_buffer {
+        int *values;
+        unsigned int head_index;
+        unsigned int size;
+};
+
 struct drbd_conf {
         /* things that are stored as / read from meta data on disk */
         unsigned long flags;
@@ -1068,6 +1074,11 @@ struct drbd_conf {
         u64 ed_uuid; /* UUID of the exposed data */
         struct mutex state_mutex;
         char congestion_reason;  /* Why we where congested... */
+        atomic_t rs_sect_in; /* counter to measure the incoming resync data rate */
+        int c_sync_rate; /* current resync rate after delay_probe magic */
+        struct fifo_buffer rs_plan_s; /* correction values of resync planer */
+        int rs_in_flight; /* resync sectors in flight (to proxy, in proxy and from proxy) */
+        int rs_planed;    /* resync sectors already planed */
 };
 
 static inline struct drbd_conf *minor_to_mdev(unsigned int minor)