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linux/zvol_os: fix crash with blk-mq on Linux 4.19 #17597

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Merged
merged 1 commit into from
Aug 8, 2025
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linux/zvol_os: fix crash with blk-mq on Linux 4.19 #17597

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4 changes: 2 additions & 2 deletions module/os/linux/zfs/zvol_os.c
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Original file line number Diff line number Diff line change
Expand Up @@ -512,8 +512,8 @@ zvol_request_impl(zvol_state_t *zv, struct bio *bio, struct request *rq,
#ifdef HAVE_BLK_MQ_RQ_HCTX
blk_mq_hw_queue = rq->mq_hctx->queue_num;
#else
blk_mq_hw_queue =
rq->q->queue_hw_ctx[rq->q->mq_map[rq->cpu]]->queue_num;
blk_mq_hw_queue = rq->q->queue_hw_ctx[
rq->q->mq_map[raw_smp_processor_id()]]->queue_num;
#endif
taskq_hash = cityhash3((uintptr_t)zv, offset >> ZVOL_TASKQ_OFFSET_SHIFT,
blk_mq_hw_queue);
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