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| author |   Yu Kuai <yukuai3@huawei.com> | 2022-05-13 10:35:06 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-05-16 11:39:20 -0600 |
| commit | 181490d5321806e537dc5386db5ea640b826bf78 (patch) | |
| tree | 863c51bbcc79a13cda5dbfda4106050ed2bf3a36 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | block: cleanup the VM accounting in submit_bio (diff) | |
| download | linux-dev-181490d5321806e537dc5386db5ea640b826bf78.tar.xz linux-dev-181490d5321806e537dc5386db5ea640b826bf78.zip | |
block, bfq: protect 'bfqd->queued' by 'bfqd->lock'
If bfq_schedule_dispatch() is called from bfq_idle_slice_timer_body(),
then 'bfqd->queued' is read without holding 'bfqd->lock'. This is
wrong since it can be wrote concurrently.
Fix the problem by holding 'bfqd->lock' in such case.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220513023507.2625717-2-yukuai3@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions