diff options
Diffstat (limited to 'block/bfq-iosched.h')
| -rw-r--r-- | block/bfq-iosched.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h index b8e793c34ff1..99c2a3cb081e 100644 --- a/block/bfq-iosched.h +++ b/block/bfq-iosched.h @@ -197,6 +197,9 @@ struct bfq_entity { /* flag, set if the entity is counted in groups_with_pending_reqs */ bool in_groups_with_pending_reqs; + + /* last child queue of entity created (for non-leaf entities) */ + struct bfq_queue *last_bfqq_created; }; struct bfq_group; @@ -230,6 +233,8 @@ struct bfq_ttime { struct bfq_queue { /* reference counter */ int ref; + /* counter of references from other queues for delayed stable merge */ + int stable_ref; /* parent bfq_data */ struct bfq_data *bfqd; @@ -365,6 +370,8 @@ struct bfq_queue { unsigned long first_IO_time; /* time of first I/O for this queue */ + unsigned long creation_time; /* when this queue is created */ + /* max service rate measured so far */ u32 max_service_rate; @@ -454,6 +461,11 @@ struct bfq_io_cq { u64 saved_last_serv_time_ns; unsigned int saved_inject_limit; unsigned long saved_decrease_time_jif; + + /* candidate queue for a stable merge (due to close creation time) */ + struct bfq_queue *stable_merge_bfqq; + + bool stably_merged; /* non splittable if true */ }; /** @@ -578,6 +590,9 @@ struct bfq_data { /* bfqq owning the last completed rq */ struct bfq_queue *last_completed_rq_bfqq; + /* last bfqq created, among those in the root group */ + struct bfq_queue *last_bfqq_created; + /* time of last transition from empty to non-empty (ns) */ u64 last_empty_occupied_ns; |