block: Annotate the queue limits functions

block: Annotate the queue limits functions

Let the thread-safety checker verify whether every start of a queue
limits update is followed by a call to a function that finishes a queue
limits update.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://patch.msgid.link/8f71062b6d0fcf2b80bc8cda701c453224755439.1780682325.git.bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>