zfs: add kqfilter support for zvol's with volmode=dev
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Authored by rew on Dec 13 2021, 2:06 AM.

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Subscribers

delphij

imp

Details

Reviewers: None

Summary

Implement support for the EVFILT_VNODE filter to trigger the NOTE_ATTRIB
event.

This will allow bhyve to notify a guest when a zvol is resized from the
host.

Note: This patch is intended be upstreamed to OpenZFS. I want to get
feedback here, to make sure I'm on the right track before submitting a
patch upstream.

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Repository

rS FreeBSD src repository - subversion

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Build Status

Buildable 43300
Build 40188: arc lint + arc unit

Event Timeline

rew created this revision.Dec 13 2021, 2:06 AM

Herald added subscribers: delphij, imp. · View Herald TranscriptDec 13 2021, 2:06 AM

rew requested review of this revision.Dec 13 2021, 2:06 AM

Harbormaster completed remote builds in B43300: Diff 99902.Dec 13 2021, 2:06 AM

abandon, I accidentally created a duplicate at https://reviews.freebsd.org/D33401

Revision Contents
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Path

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sys/

contrib/

openzfs/

module/

os/

freebsd/

zfs/

zvol_os.c

63 lines

Diff 99902

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sys/contrib/openzfs/module/os/freebsd/zfs/zvol_os.c

zfs: add kqfilter support for zvol's with volmode=devAbandonedPublicActions