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| H A D | pci.c | 38210800 Fri Oct 30 12:28:54 CDT 2020 Keith Busch <kbusch@kernel.org> Revert "nvme-pci: remove last_sq_tail"
Multiple CPUs may be mapped to the same hctx, allowing mulitple
submission contexts to attempt commit_rqs(). We need to verify we're
not writing the same doorbell value multiple times since that's a spec
violation.
Revert commit 54b2fcee1db041a83b52b51752dade6090cf952f.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1878596
Reported-by: "B.L. Jones" <brandon.gustav@googlemail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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