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block/bfq: Enable I/O statistics
BFQ uses io_start_time_ns. That member variable is only set if I/O statistics are enabled. Hence this patch that enables I/O statistics at the time BFQ is associated with a request queue. Compile-tested only. Reported-by: Cixi Geng <cixi.geng1@unisoc.com> Cc: Cixi Geng <cixi.geng1@unisoc.com> Cc: Yu Kuai <yukuai3@huawei.com> Cc: Paolo Valente <paolo.valente@unimore.it> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -7046,6 +7046,7 @@ static void bfq_exit_queue(struct elevator_queue *e)
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spin_unlock_irq(&bfqd->lock);
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#endif
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blk_stat_disable_accounting(bfqd->queue);
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wbt_enable_default(bfqd->queue);
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kfree(bfqd);
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@ -7192,6 +7193,8 @@ static int bfq_init_queue(struct request_queue *q, struct elevator_type *e)
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blk_queue_flag_set(QUEUE_FLAG_SQ_SCHED, q);
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wbt_disable_default(q);
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blk_stat_enable_accounting(q);
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return 0;
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out_free:
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