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| author | Yu Kuai <yukuai3@huawei.com> | 2021-08-05 20:46:45 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-12 13:22:08 +0200 |
| commit | 821e6a61335443cd3d56c85427c7f950cb4fd551 (patch) | |
| tree | 284b4feb38cd044b93692fae4aafca08599765be /ipc/syscall.c | |
| parent | c5a499b8607a65570170e5df6276e40756f34ab5 (diff) | |
blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()
[ Upstream commit 8d75d0eff6887bcac7225e12b9c75595e523d92d ]
If queue is dying while iolatency_set_limit() is in progress,
blk_get_queue() won't increment the refcount of the queue. However,
blk_put_queue() will still decrement the refcount later, which will
cause the refcout to be unbalanced.
Thus error out in such case to fix the problem.
Fixes: 8c772a9bfc7c ("blk-iolatency: fix IO hang due to negative inflight counter")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20210805124645.543797-1-yukuai3@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'ipc/syscall.c')
0 files changed, 0 insertions, 0 deletions