readlink /etc/mtab > /dev/full panics

[oech3]

No description provided.

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/shuf/shuf-reservoir (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/sort/sort-stale-thread-mem (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/tail/follow-name (fails in this run but passes in the 'main' branch)

[codspeed-hq]

Merging this PR will improve performance by 3.13%

⚡ 1 improved benchmark
✅ 141 untouched benchmarks
⏩ 180 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	cp_large_file[16]	379.7 µs	368.2 µs	+3.13%

---

_{Comparing oech3:readlink-panic (0929ad7) with main (4693a8f)²}

Footnotes

1. 180 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on main (9d0ac44) during the generation of this report, so 4693a8f was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩