[LTP] hugemmap35: Migrating libhugetlbfs test v6 truncate_reserve_wraparound.c

[linuxtestproject.agent@gmail.com]

Hi Pavithra,

On Sat Apr 4 22:46:14 2026 +0530, Pavithra wrote:
> hugemmap35: Migrating libhugetlbfs test v6 truncate_reserve_wraparound.c

The "v6" in the subject looks like a series revision tag left over from
git-send-email. The libhugetlbfs source file has no "v6" in its name
(the Origin URL confirms this). Please strip it before resubmitting.

Suggested subject:
  "hugemmap35: migrate libhugetlbfs test truncate_reserve_wraparound.c"

> +/*
> + * Origin: https://github.com/libhugetlbfs/libhugetlbfs/blob/master/tests/truncate_reserve_wraparound.c
> + *
> + * Test that hugepage reservation accounting is correctly maintained when
> + * truncating a hugetlbfs file. This verifies that reserved hugepages are
> + * properly tracked through the complete lifecycle
> + */

The description block must open with `/*\` (backslash after the opening
`/*`) to be recognised as RST content and exported to the test catalog.
A plain `/* */` comment is not rendered there.

The `Origin:` URL is also inside what should be the RST doc block. It
belongs in a separate plain `/* */` comment before the `/*\ ... */`
block, or can simply be omitted (the commit message and .tags already
record the provenance).

Rule 4 also requires documenting why root is needed. Hugetlbfs has to
be mounted by root, so a sentence to that effect belongs in the block.

Suggested restructure:

    /*
     * Origin: https://github.com/libhugetlbfs/libhugetlbfs/blob/...
     */

    /*\
     * Test that hugepage reservation accounting is correctly maintained
     * when truncating a hugetlbfs file. This verifies that reserved
     * hugepages are properly tracked through the sequence of: mmap
     * (reserves page), touch (instantiates page), truncate (releases
     * page), and attempted access (triggers SIGBUS). A bug in i_size
     * handling could cause the reservation count to become incorrect,
     * leading to resource leaks or allocation failures.
     *
     * Requires root to mount hugetlbfs.
     */

Verdict - Needs revision

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