[LTP] [PATCH v5] syscalls/umount2: Convert to new API and use SAFE_ACCESS

[Petr Vorel]

Hi Dai,

> v4->v5:
>   - Add changelog from previous version
nit: You don't have mention in changelog that you're adding it.
(note anything after --- is not in the commit message)

>   - Make commit message order more reasonable
>   - Fix description format
>   - Merge umount2.h into umount2_02
>   - Use macro to not repeat flag and exp_errno
>   - Make test_umount2() more compact
Thanks for implementing all this!

I merged it with few minor changes, added Xu's Reviewed-by: tag
(he reviewed v2 and v3).

...
> +++ b/testcases/kernel/syscalls/umount2/umount2_02.c
> +#define FLAG_DESC(x, y) .flag = x, .exp_errno = 0, .desc = "umount2("y") with "#x" expected success"
> +#define FLAG_EXP_ERRNO_DESC(x, y, z) .flag = x, .exp_errno = y, \
> +				     .desc = "umount2("z") with "#x" expected "#y
I cleaned whitespace here.

...
> +	const char *mntpoint;
> +	int do_access;
> +} tcases[] = {
> +	{FLAG_EXP_ERRNO_DESC(MNT_EXPIRE | MNT_FORCE, EINVAL, ""), MNTPOINT, 0},

I removed blank lines in here.

...
> +static inline int umount2_retry(const char *target, int flags)
I removed this inline (required for *.h, but not needed here).

Kind regards,
Petr