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nvme: Be more correct in busdma usage
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Authored by imp on Sat, Jan 3, 6:13 PM.
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Summary

Only do a PRE/POST sync for READ or WRITE, but not both. Only do a PRE
sync for requests with payloads.

Sponsored by: Netflix

Diff Detail

Repository
rG FreeBSD src repository
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Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 69594
Build 66477: arc lint + arc unit

Event Timeline

imp requested review of this revision.Sat, Jan 3, 6:13 PM
mmel added inline comments.
sys/dev/nvme/nvme_qpair.c
1071

This fragment looks wrong.

sys/dev/nvme/nvme_qpair.c
1071

This fragment looks wrong.

What looks wrong?

fix the little oops that mmel found