[PATCH] NVMe: Skip namespaces with interleaved meta-data

[Martin K. Petersen]

>>>>> "Paul" == Paul Grabinar <paul.grabinar at ranbarg.com> writes:

Paul> What happens if you switch on and off meta-data dynamically with
Paul> /sys/block/<bdev>/integrity/write_generate and
Paul> /sys/block/<bdev>/integrity/read_verify?

I think the best way to go about dealing with all this is to set PRACT=1
if no bip is attached to a bio bound for a name space formatted with PI.

That's essentially how it works in SCSI (albeit for entirely different
reasons -- the DIF nexus is independent of the DIX ditto).

In retrospect I wish we had switched the polarity of PRACT so that you'd
have to explicitly request the PI to be passed to the OS.

-- 
Martin K. Petersen	Oracle Linux Engineering