dm: make sure create and remove dm device won't race with open and close table

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[ Upstream commit d563792c89 ]

open_table_device() and close_table_device() is protected by
table_devices_lock, hence use it to protect add_disk() and
del_gendisk().

Prepare to track per-add_disk holder relations in dm.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221115141054.1051801-6-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Stable-dep-of: 1a581b7216 ("dm: track per-add_disk holder relations in DM")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Yu Kuai 2022-11-15 22:10:49 +08:00 • committed by Greg Kroah-Hartman

parent 365c351efd

commit ce65ef11d3

1 changed files with 16 additions and 0 deletions

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drivers/md/dm.c

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