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md(4): Direct mode
Changes PlannedPublic

Authored by trasz on Nov 16 2021, 11:58 AM.

Details

Reviewers
None
Summary

This makes it possible for md(4) to avoid using a separate thread
to perform IO, instead doing it all immediately within the GEOM
thread. Speeds up diskinfo -Sw about 4x for really tiny IO,
otherwise makes things slower. Not a commit candidate; stashing
here for future reference.

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint OK
Unit
No Unit Test Coverage
Build Status
Buildable 42806
Build 39694: arc lint + arc unit