[PATCH 22/24] cfq-iosched: separate out cfqg_stats_reset() from cfq_pd_reset_stats()
From: Tejun Heo <tj@kernel.org>
Date: 2012-12-28 20:37:39
Also in:
lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Separate out cfqg_stats_reset() which takes struct cfqg_stats * from cfq_pd_reset_stats() and move the latter to where other pd methods are defined. cfqg_stats_reset() will be used to implement hierarchical stats. Signed-off-by: Tejun Heo <tj@kernel.org> --- block/cfq-iosched.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index d43145cc..f8b34bb 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c@@ -688,11 +688,9 @@ static inline void cfqg_stats_update_completion(struct cfq_group *cfqg, io_start_time - start_time); } -static void cfq_pd_reset_stats(struct blkcg_gq *blkg) +/* @stats = 0 */ +static void cfqg_stats_reset(struct cfqg_stats *stats) { - struct cfq_group *cfqg = blkg_to_cfqg(blkg); - struct cfqg_stats *stats = &cfqg->stats; - /* queued stats shouldn't be cleared */ blkg_rwstat_reset(&stats->service_bytes); blkg_rwstat_reset(&stats->serviced);
@@ -1477,6 +1475,13 @@ static void cfq_pd_init(struct blkcg_gq *blkg) cfqg->leaf_weight = blkg->blkcg->cfq_leaf_weight; } +static void cfq_pd_reset_stats(struct blkcg_gq *blkg) +{ + struct cfq_group *cfqg = blkg_to_cfqg(blkg); + + cfqg_stats_reset(&cfqg->stats); +} + /* * Search for the cfq group current task belongs to. request_queue lock must * be held.
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1.8.0.2