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| author | Ming Lei <ming.lei@redhat.com> | 2022-07-11 17:08:08 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-21 15:15:35 +0200 |
| commit | ed6ae2381150bd8235e5f8460913ea6152bde2e1 (patch) | |
| tree | 634628fe4ac7b843838777a96efee33a2e2d04eb /block/blk-mq-sched.c | |
| parent | 0ca556256fb438bb754936e9ec210dc1b26b622f (diff) | |
blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created
[ Upstream commit f3ec5d11554778c24ac8915e847223ed71d104fc ]
blk_mq_debugfs_register_hctx() can be called by blk_mq_update_nr_hw_queues
when gendisk isn't added yet, such as nvme tcp.
Fixes the warning of 'debugfs: Directory 'hctx0' with parent '/' already present!'
which can be observed reliably when running blktests nvme/005.
Fixes: 6cfc0081b046 ("blk-mq: no need to check return value of debugfs_create functions")
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220711090808.259682-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'block/blk-mq-sched.c')
0 files changed, 0 insertions, 0 deletions