block: move blkcg initialization/destroy into disk allocation/release handler

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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>

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This commit is contained in:

Ming Lei 2022-03-08 06:51:55 +01:00 • committed by Jens Axboe

parent 01d0c69853

commit 1059699f87

3 changed files with 9 additions and 12 deletions

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5

block/blk-core.c

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7

block/blk-sysfs.c

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9

block/genhd.c

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