dm kcopyd: introduce configurable throttling

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / md / dm-snap.c

diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 58c2b58..c0e0702 100644 (file)
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -124,6 +124,9 @@ struct dm_snapshot {
 #define RUNNING_MERGE          0
 #define SHUTDOWN_MERGE         1
 
+DECLARE_DM_KCOPYD_THROTTLE_WITH_MODULE_PARM(snapshot_copy_throttle,
+               "A percentage of time allocated for copy on write");
+
 struct dm_dev *dm_snap_origin(struct dm_snapshot *s)
 {
        return s->origin;
@@ -1108,7 +1111,7 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
                goto bad_hash_tables;
        }
 
-       s->kcopyd_client = dm_kcopyd_client_create();
+       s->kcopyd_client = dm_kcopyd_client_create(&dm_kcopyd_throttle);
        if (IS_ERR(s->kcopyd_client)) {
                r = PTR_ERR(s->kcopyd_client);
                ti->error = "Could not create kcopyd client";