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-rw-r--r--block/mq-deadline.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/mq-deadline.c b/block/mq-deadline.c
index 02a916ba62ee..f958e79277b8 100644
--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -646,8 +646,9 @@ static void dd_depth_updated(struct blk_mq_hw_ctx *hctx)
struct request_queue *q = hctx->queue;
struct deadline_data *dd = q->elevator->elevator_data;
struct blk_mq_tags *tags = hctx->sched_tags;
+ unsigned int shift = tags->bitmap_tags.sb.shift;
- dd->async_depth = max(1UL, 3 * q->nr_requests / 4);
+ dd->async_depth = max(1U, 3 * (1U << shift) / 4);
sbitmap_queue_min_shallow_depth(&tags->bitmap_tags, dd->async_depth);
}