[LTP] lapi: fallback definitions for swapon syscall

[linuxtestproject.agent@gmail.com]

Hi Andrea,

On Aug 28, 2026, Andrea Cervesato wrote:
> lapi: fallback definitions for swapon syscall

--- [PATCH 1/3] ---

> lapi: fallback definitions for swapon syscall
>
> Introduce fallback definition inside lapi for:

Could the subject and body name include/tse_swap.h rather than lapi? The
fallback definitions are not added under include/lapi/, so the current
component and location do not match the patch.

--- [PATCH 3/3] ---

> +	TST_EXP_FAIL(tst_syscall(__NR_swapon, tc->path, tc->flags), tc->exp_errno,
>  		     "swapon(2) fail with %s", tc->err_desc);
>
>  static void cleanup(void)
>  {
>  	if (do_swapoff && tst_syscall(__NR_swapoff, USED_FILE))
>  		tst_res(TWARN | TERRNO, "swapoff(alreadyused) failed");
>  }

Could an unexpected successful swapon() of SWAP_FILE be tracked and undone?
This is the failure mode these new cases are intended to detect, but
TST_EXP_FAIL() only reports TFAIL. The swap area remains active, the next
case gets EBUSY, and cleanup only disables USED_FILE, so the test filesystem
cannot be unmounted.

Verdict - Needs revision

---
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LTP AI Reviewer