blk-mq: initialize sg_reserved_size

To behave the same way as the old request path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/block/blk-mq.c b/block/blk-mq.c
index a99bea455452..f1e63c2ece71 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1387,6 +1387,8 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_reg *reg,
         q->mq_ops = reg->ops;
         q->queue_flags |= QUEUE_FLAG_MQ_DEFAULT;
 
+        q->sg_reserved_size = INT_MAX;
+
         blk_queue_make_request(q, blk_mq_make_request);
         blk_queue_rq_timed_out(q, reg->ops->timeout);
         if (reg->timeout)