31 lines
968 B
Markdown
31 lines
968 B
Markdown
# Test Case: Parent Vnode Lookup Behavior
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**Test ID**: TC054-vn-vget-ino
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**Category**: VFS Integration
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**Priority**: High
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## Objective
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Verify repeated dotdot lookups return the correct stable parent vnode without
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deadlock. This is behavior-level coverage of the vn_vget_ino path; userspace
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cannot prove the internal helper call by timing.
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## Procedure
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Mount vfs/vfs-plain.erofs and run:
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stat -f 'ino=%i gen=%v type=%HT' \
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/tmp/repo22-g3/mnt/parent > TC054-parent.txt
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stat -f 'ino=%i gen=%v type=%HT' \
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/tmp/repo22-g3/mnt/parent/child/.. > TC054-dotdot1.txt
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stat -f 'ino=%i gen=%v type=%HT' \
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/tmp/repo22-g3/mnt/parent/child/.. > TC054-dotdot2.txt
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cmp TC054-parent.txt TC054-dotdot1.txt
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cmp TC054-dotdot1.txt TC054-dotdot2.txt
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## Expected Results
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All commands complete, metadata is identical, and dmesg has no lock-order,
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trap, or panic report. Record behavior and cleanup without claiming direct
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internal instrumentation.
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