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-rw-r--r--block/blk-settings.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c
index bd582a7..8a3ea3b 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -165,6 +165,13 @@ void blk_queue_make_request(struct request_queue *q, make_request_fn *mfn)
blk_set_default_limits(&q->limits);
/*
+ * If the caller didn't supply a lock, fall back to our embedded
+ * per-queue locks
+ */
+ if (!q->queue_lock)
+ q->queue_lock = &q->__queue_lock;
+
+ /*
* by default assume old behaviour and bounce for any highmem page
*/
blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
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