A h/w context's tags are freed if it was not assigned a CPU. Check if
the context has tags before updating the depth.
Signed-off-by: Keith Busch <keith.busch@xxxxxxxxx>
---
block/blk-mq.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 56c0a72..68981d8 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -2330,6 +2330,8 @@ int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr)
ret = 0;
queue_for_each_hw_ctx(q, hctx, i) {
+ if (!hctx->tags)
+ continue;
ret = blk_mq_tag_update_depth(hctx->tags, nr);
if (ret)
break;
--
2.6.2.307.g37023ba
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