kern linker: Do not try to unload module if it has dependants
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Authored by zlei on Nov 9 2023, 10:06 AM.

Details

Reviewers

dfr
kib
dab
jhb

Commits

rGa2f57656620d: kern linker: Do not unload a module if it has dependants
rGf1994d1eb215: kern linker: Do not unload a module if it has dependants
rGf43ff3e15c8b: kern linker: Do not unload a module if it has dependants

Summary

linker_file_unload() will just drop a reference in case the module have more than one
references. For user requested unload, we are going to unload but not just to drop a
reference.

PR: 274986
MFC after: 2 weeks

Test Plan

# kldload bridgestp
# kldload if_bridge
# kldunload bridgestp
kldunload: can't unload file: Device busy

Diff Detail

Repository

rG FreeBSD src repository

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Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

zlei created this revision.Nov 9 2023, 10:06 AM

Herald added a subscriber: imp. · View Herald TranscriptNov 9 2023, 10:06 AM

zlei requested review of this revision.Nov 9 2023, 10:06 AM

dfr accepted this revision.Nov 9 2023, 3:46 PM

This revision is now accepted and ready to land.Nov 9 2023, 3:46 PM

dab accepted this revision.Nov 10 2023, 2:04 AM

jhb accepted this revision.Nov 15 2023, 4:08 PM

jhb added a subscriber: jhb.

jhb added inline comments.

sys/kern/kern_linker.c
1285–1286	I think this is more readable.

guest-patmaddox added a subscriber: guest-patmaddox.Dec 13 2023, 9:58 PM

Closed by commit rGf43ff3e15c8b: kern linker: Do not unload a module if it has dependants (authored by zlei). · Explain WhyMar 26 2024, 3:57 AM

This revision was automatically updated to reflect the committed changes.

zlei added a commit: rGf43ff3e15c8b: kern linker: Do not unload a module if it has dependants.

Herald added a subscriber: olce. · View Herald TranscriptMar 26 2024, 3:57 AM

zlei marked an inline comment as done.Tue, Apr 9, 4:11 AM

zlei added a commit: rGf1994d1eb215: kern linker: Do not unload a module if it has dependants.

zlei added a commit: rGa2f57656620d: kern linker: Do not unload a module if it has dependants.Tue, Apr 9, 4:14 AM

Revision Contents
Changeset List

Path

Size

sys/

kern/

kern_linker.c

2 lines

Diff 136214

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kern linker: Do not try to unload module if it has dependantsClosedPublicActions