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| author |   Ming Lei <ming.lei@redhat.com> | 2022-03-08 06:51:55 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-03-08 19:40:01 -0700 |
| commit | 1059699f87eb0b3aa9d574b91a572d534897134a (patch) | |
| tree | affbee31ae4a5aa5f88a7a8eb75a89a26d016332 /block/genhd.c | |
| parent | sr: implement ->free_disk to simplify refcounting (diff) | |
| download | linux-dev-1059699f87eb0b3aa9d574b91a572d534897134a.tar.xz linux-dev-1059699f87eb0b3aa9d574b91a572d534897134a.zip | |
block: move blkcg initialization/destroy into disk allocation/release handler
blkcg works on FS bio level, so it is reasonable to make both blkcg and
gendisk sharing same lifetime. Meantime there won't be any FS IO when
releasing disk, so safe to move blkcg initialization/destroy into disk
allocation/release handler
Long term, we can move blkcg into gendisk completely.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220308055200.735835-10-hch@lst.de
[axboe: fixup missing blk-cgroup.h include]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 9 |
1 files changed, 9 insertions, 0 deletions
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; |