nvme-pci: remove the barriers in nvme_irq()
The barriers were added to the nvme_irq() in commit 3a7afd8e ("nvme-pci: remove the CQ lock for interrupt driven queues") to prevent compiler from doing memory optimization for the variabes that were protected previously by spinlock in nvme_irq() at completion queue processing and with queue head check condition. The variable nvmeq->last_cq_head from those checks was removed in the commit f6c4d97b ("nvme/pci: Remove last_cq_head") that was not allwing poll queues from mistakenly triggering the spurious interrupt detection. Remove the barriers which were protecting the updates to the variables. Reported-by:Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
Christoph Hellwig <hch@lst.de>
parent
80755855
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