diff options
| author | Ming Lei <ming.lei@redhat.com> | 2024-10-31 21:37:20 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-05 13:54:34 +0100 |
| commit | 0aa57396ae503de8b22e7b2eb4ded50c4086c554 (patch) | |
| tree | 71f19ffcf7f62d8f75baf48986e7339c83ae3b6f | |
| parent | 6655172e54f87af43a1cc0612c6c860d62e8e72c (diff) | |
block: don't verify IO lock for freeze/unfreeze in elevator_init_mq()
commit 357e1b7f730bd85a383e7afa75a3caba329c5707 upstream.
elevator_init_mq() is only called at the entry of add_disk_fwnode() when
disk IO isn't allowed yet.
So not verify io lock(q->io_lockdep_map) for freeze & unfreeze in
elevator_init_mq().
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reported-by: Lai Yi <yi1.lai@linux.intel.com>
Fixes: f1be1788a32e ("block: model freeze & enter queue as lock for supporting lockdep")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20241031133723.303835-5-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | block/elevator.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/block/elevator.c b/block/elevator.c index 9430cde13d1a..43ba4ab1ada7 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -598,13 +598,19 @@ void elevator_init_mq(struct request_queue *q) * drain any dispatch activities originated from passthrough * requests, then no need to quiesce queue which may add long boot * latency, especially when lots of disks are involved. + * + * Disk isn't added yet, so verifying queue lock only manually. */ - blk_mq_freeze_queue(q); + blk_freeze_queue_start_non_owner(q); + blk_freeze_acquire_lock(q, true, false); + blk_mq_freeze_queue_wait(q); + blk_mq_cancel_work_sync(q); err = blk_mq_init_sched(q, e); - blk_mq_unfreeze_queue(q); + blk_unfreeze_release_lock(q, true, false); + blk_mq_unfreeze_queue_non_owner(q); if (err) { pr_warn("\"%s\" elevator initialization failed, " |