[LTP] hugetlb/hugemmap: add hugemmap33 to test hugetlbfs quota accounting

[linuxtestproject.agent@gmail.com]

Hi Pavithra,

On Sun, 9 Aug 2026, Pavithra wrote:
> hugetlb/hugemmap: add hugemmap33 to test hugetlbfs quota accounting

> 		if (expected == QUOTA_FAIL &&
> 		    (errno == ENOMEM || errno == ENOSPC)) {

Could these checks require ENOMEM rather than also accepting ENOSPC?
The documented behavior is ENOMEM, and hugetlbfs_file_mmap() deliberately
returns ENOMEM when hugetlb_reserve_pages() rejects the reservation.
Accepting ENOSPC here and in the COW check can hide an errno regression.

> 	a = mmap(NULL, size, PROT_READ | PROT_WRITE, mmap_flags, fd, 0);

Could this and the second tested mmap() call use TESTPTR() or an appropriate
TST_EXP_* wrapper? Subject syscalls should use the LTP result macros so the
return value and errno are captured consistently.

> 	char path[PATH_MAX + 32];

Could this use PATH_MAX? LTP path buffers should use PATH_MAX rather than a
custom larger size, and this constructed path is already bounded.

> +/hugetlb/hugemmap/hugemmap33

Could this entry move to
testcases/kernel/mem/hugetlb/hugemmap/.gitignore? New test binaries should be
ignored in their own leaf test directory rather than a parent directory.

Verdict - Needs revision

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