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-rw-r--r--block/blk-core.c5
-rw-r--r--block/blk-sysfs.c7
-rw-r--r--block/genhd.c9
3 files changed, 9 insertions, 12 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 4d858fc08f8b..3fa2f08d3750 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -496,17 +496,12 @@ struct request_queue *blk_alloc_queue(int node_id, bool alloc_srcu)
PERCPU_REF_INIT_ATOMIC, GFP_KERNEL))
goto fail_stats;
- if (blkcg_init_queue(q))
- goto fail_ref;
-
blk_queue_dma_alignment(q, 511);
blk_set_default_limits(&q->limits);
q->nr_requests = BLKDEV_DEFAULT_RQ;
return q;
-fail_ref:
- percpu_ref_exit(&q->q_usage_counter);
fail_stats:
blk_free_queue_stats(q->stats);
fail_split:
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index 241ded62f458..220085109d7f 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -751,13 +751,6 @@ static void blk_exit_queue(struct request_queue *q)
ioc_clear_queue(q);
elevator_exit(q);
}
-
- /*
- * Remove all references to @q from the block cgroup controller before
- * restoring @q->queue_lock to avoid that restoring this pointer causes
- * e.g. blkcg_print_blkgs() to crash.
- */
- blkcg_exit_queue(q);
}
/**
diff --git a/block/genhd.c b/block/genhd.c
index 54f60ded2ee6..fc10aedab209 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -29,6 +29,7 @@
#include "blk.h"
#include "blk-mq-sched.h"
#include "blk-rq-qos.h"
+#include "blk-cgroup.h"
static struct kobject *block_depr;
@@ -1120,9 +1121,12 @@ static void disk_release(struct device *dev)
blk_mq_cancel_work_sync(disk->queue);
+ blkcg_exit_queue(disk->queue);
+
disk_release_events(disk);
kfree(disk->random);
xa_destroy(&disk->part_tbl);
+
disk->queue->disk = NULL;
blk_put_queue(disk->queue);
@@ -1328,6 +1332,9 @@ struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
if (xa_insert(&disk->part_tbl, 0, disk->part0, GFP_KERNEL))
goto out_destroy_part_tbl;
+ if (blkcg_init_queue(q))
+ goto out_erase_part0;
+
rand_initialize_disk(disk);
disk_to_dev(disk)->class = &block_class;
disk_to_dev(disk)->type = &disk_type;
@@ -1340,6 +1347,8 @@ struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
#endif
return disk;
+out_erase_part0:
+ xa_erase(&disk->part_tbl, 0);
out_destroy_part_tbl:
xa_destroy(&disk->part_tbl);
disk->part0->bd_disk = NULL;