diff options
-rw-r--r-- | block/cfq-iosched.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index dee9d9378fee..8d5a2f2f7fb9 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c | |||
@@ -47,6 +47,7 @@ static const int cfq_hist_divisor = 4; | |||
47 | #define CFQ_SERVICE_SHIFT 12 | 47 | #define CFQ_SERVICE_SHIFT 12 |
48 | 48 | ||
49 | #define CFQQ_SEEK_THR (sector_t)(8 * 100) | 49 | #define CFQQ_SEEK_THR (sector_t)(8 * 100) |
50 | #define CFQQ_CLOSE_THR (sector_t)(8 * 1024) | ||
50 | #define CFQQ_SECT_THR_NONROT (sector_t)(2 * 32) | 51 | #define CFQQ_SECT_THR_NONROT (sector_t)(2 * 32) |
51 | #define CFQQ_SEEKY(cfqq) (hweight32(cfqq->seek_history) > 32/8) | 52 | #define CFQQ_SEEKY(cfqq) (hweight32(cfqq->seek_history) > 32/8) |
52 | 53 | ||
@@ -1660,9 +1661,9 @@ static inline sector_t cfq_dist_from_last(struct cfq_data *cfqd, | |||
1660 | } | 1661 | } |
1661 | 1662 | ||
1662 | static inline int cfq_rq_close(struct cfq_data *cfqd, struct cfq_queue *cfqq, | 1663 | static inline int cfq_rq_close(struct cfq_data *cfqd, struct cfq_queue *cfqq, |
1663 | struct request *rq, bool for_preempt) | 1664 | struct request *rq) |
1664 | { | 1665 | { |
1665 | return cfq_dist_from_last(cfqd, rq) <= CFQQ_SEEK_THR; | 1666 | return cfq_dist_from_last(cfqd, rq) <= CFQQ_CLOSE_THR; |
1666 | } | 1667 | } |
1667 | 1668 | ||
1668 | static struct cfq_queue *cfqq_close(struct cfq_data *cfqd, | 1669 | static struct cfq_queue *cfqq_close(struct cfq_data *cfqd, |
@@ -1689,7 +1690,7 @@ static struct cfq_queue *cfqq_close(struct cfq_data *cfqd, | |||
1689 | * will contain the closest sector. | 1690 | * will contain the closest sector. |
1690 | */ | 1691 | */ |
1691 | __cfqq = rb_entry(parent, struct cfq_queue, p_node); | 1692 | __cfqq = rb_entry(parent, struct cfq_queue, p_node); |
1692 | if (cfq_rq_close(cfqd, cur_cfqq, __cfqq->next_rq, false)) | 1693 | if (cfq_rq_close(cfqd, cur_cfqq, __cfqq->next_rq)) |
1693 | return __cfqq; | 1694 | return __cfqq; |
1694 | 1695 | ||
1695 | if (blk_rq_pos(__cfqq->next_rq) < sector) | 1696 | if (blk_rq_pos(__cfqq->next_rq) < sector) |
@@ -1700,7 +1701,7 @@ static struct cfq_queue *cfqq_close(struct cfq_data *cfqd, | |||
1700 | return NULL; | 1701 | return NULL; |
1701 | 1702 | ||
1702 | __cfqq = rb_entry(node, struct cfq_queue, p_node); | 1703 | __cfqq = rb_entry(node, struct cfq_queue, p_node); |
1703 | if (cfq_rq_close(cfqd, cur_cfqq, __cfqq->next_rq, false)) | 1704 | if (cfq_rq_close(cfqd, cur_cfqq, __cfqq->next_rq)) |
1704 | return __cfqq; | 1705 | return __cfqq; |
1705 | 1706 | ||
1706 | return NULL; | 1707 | return NULL; |
@@ -3103,7 +3104,7 @@ cfq_should_preempt(struct cfq_data *cfqd, struct cfq_queue *new_cfqq, | |||
3103 | * if this request is as-good as one we would expect from the | 3104 | * if this request is as-good as one we would expect from the |
3104 | * current cfqq, let it preempt | 3105 | * current cfqq, let it preempt |
3105 | */ | 3106 | */ |
3106 | if (cfq_rq_close(cfqd, cfqq, rq, true)) | 3107 | if (cfq_rq_close(cfqd, cfqq, rq)) |
3107 | return true; | 3108 | return true; |
3108 | 3109 | ||
3109 | return false; | 3110 | return false; |