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Wire up OpenZFS with VOP_DEALLOCATE(9)
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Authored by khng on Feb 21 2021, 8:38 AM.

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markj
allanjude
Summary

Wire up OpenZFS with VOP_DEALLOCATE(9)

This will go to upstream actually. However a differential is created for
easier tools/tools/git/git-arc.sh workflow.

Submitted by: Ka Ho Ng <khng@freebsdfoundation.org>
Sponsored by: The FreeBSD Foundation

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rS FreeBSD src repository - subversion
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Buildable 39209
Build 36098: arc lint + arc unit

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khng requested review of this revision.Feb 21 2021, 8:38 AM

Rebased on top of the newest D27194.

khng edited the summary of this revision. (Show Details)
sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
3852

Does this comment need updating to instead say what FreeBSD does in this case?

sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
3852

That seems necessary. I don't recall we have the same limitation like Solaris that VOP can only issued on opened files.

khng marked an inline comment as not done.

Removed SPACECTL_F_CANEXPAND support on SPACECTL_DEALLOC

Can't think of any use of it right now.

  • New zfs_deallocate and new DMU api instead of calling into zfs_freesp

_PC_FDEALLOC_PRESENT -> _PC_DEALLOC_PRESENT