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Differential D50532

vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags
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Authored by markj on May 26 2025, 1:57 PM.
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Reviewers
jamie
olce
kib
Commits
rG4613405fd6d3: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags
rG0316d0a247c7: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags
rGadb8c1a9d09d: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags
rG031cd548775c: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags
rGf4158953007f: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags
Summary

Fixes: 7587f6d4840f ("namei: Make stackable filesystems check harder for jail roots")

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rG FreeBSD src repository
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Tests Not Applicable

Event Timeline

markj created this revision.May 26 2025, 1:57 PM
Herald added a subscriber: imp. · View Herald TranscriptMay 26 2025, 1:57 PM
markj requested review of this revision.May 26 2025, 1:57 PM
Harbormaster completed remote builds in B64440: Diff 156050.May 26 2025, 1:57 PM
markj added a parent revision: D50531: vfs: Don't clobber namei flags in vn_open_cred().May 26 2025, 1:57 PM
markj added a child revision: D50533: tests: Add a regression test for commit 7587f6d4840f8.
kib accepted this revision.May 26 2025, 4:53 PM

So otherwise fast lookup is effectively turned off?

This revision is now accepted and ready to land.May 26 2025, 4:53 PM
markj added a comment.May 26 2025, 4:54 PM
In D50532#1153545, @kib wrote:

So otherwise fast lookup is effectively turned off?

Yes, though not for open(2) because of the other bug (overwriting cn_flags).

olce accepted this revision.May 27 2025, 1:02 PM
Closed by commit rGf4158953007f: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags (authored by markj). · Explain WhyMay 27 2025, 2:39 PM
This revision was automatically updated to reflect the committed changes.
markj added a commit: rGf4158953007f: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags.
markj added a commit: rG031cd548775c: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags.Jun 30 2025, 2:21 PM
markj added a commit: rGadb8c1a9d09d: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags.Nov 21 2025, 3:20 PM
markj added a commit: rG0316d0a247c7: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags.Tue, Jan 27, 7:17 PM
markj added a commit: rG4613405fd6d3: vfs cache: Add NAMEILOOKUP to the whitelist of fastpath lookup flags.Tue, Jan 27, 7:23 PM

Revision Contents
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PathSize
sys/
kern/
2 lines

Diff 156092

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sys/kern/vfs_cache.c

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