The percpu counter is only used for blk-mq, so move
its allocation and free inside blk-mq, and don't
allocate it for legacy queue device.
Signed-off-by: Ming Lei <tom.leim...@gmail.com>
---
block/blk-core.c | 7 +------
block/blk-mq.c | 5 +++++
block/blk-sysfs.c | 2 --
3 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 5b6f768..29d5fba 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -576,12 +576,9 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask,
int node_id)
if (!q)
return NULL;
- if (percpu_counter_init(&q->mq_usage_counter, 0))
- goto fail_q;
-
q->id = ida_simple_get(&blk_queue_ida, 0, 0, gfp_mask);
if (q->id < 0)
- goto fail_c;
+ goto fail_q;
q->backing_dev_info.ra_pages =
(VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
@@ -639,8 +636,6 @@ fail_bdi:
bdi_destroy(&q->backing_dev_info);
fail_id:
ida_simple_remove(&blk_queue_ida, q->id);
-fail_c:
- percpu_counter_destroy(&q->mq_usage_counter);
fail_q:
kmem_cache_free(blk_requestq_cachep, q);
return NULL;
diff --git a/block/blk-mq.c b/block/blk-mq.c
index e32c04c..d80cb89 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1777,6 +1777,9 @@ struct request_queue *blk_mq_init_queue(struct
blk_mq_tag_set *set)
if (!q)
goto err_hctxs;
+ if (percpu_counter_init(&q->mq_usage_counter, 0))
+ goto err_map;
+
q->mq_map = blk_mq_make_queue_map(set);
if (!q->mq_map)
goto err_map;
@@ -1863,6 +1866,8 @@ void blk_mq_free_queue(struct request_queue *q)
blk_mq_exit_hw_queues(q, set, set->nr_hw_queues);
blk_mq_free_hw_queues(q, set);
+ percpu_counter_destroy(&q->mq_usage_counter);
+
free_percpu(q->queue_ctx);
kfree(q->queue_hw_ctx);
kfree(q->mq_map);
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 4d6811a..23321fb 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -517,8 +517,6 @@ static void blk_release_queue(struct kobject *kobj)
if (q->queue_tags)
__blk_queue_free_tags(q);
- percpu_counter_destroy(&q->mq_usage_counter);
-
if (q->mq_ops)
blk_mq_free_queue(q);
--
1.7.9.5
--
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