[LTP] [PATCH] aio02: Use mounted filesystem instead of temp directory

[Xiao Yang <yangx.jy@cn.fujitsu.com>]

On 2020/2/12 13:08, Yang Xu wrote:
> tmpfs doesn't support O_DIRECT flag, open file with this flag on
> tmpfs will report EINVAL error. I thin we should test this case on
> ext2 filesystem instead of temp directory.
Hi Xu,

Thanks for your quick fix. :-)

I don't want to use the fixed file system to run aio02.
I perfer to just drop O_DIRECT flag for tmpfs, as below:
1) Drop O_DIRECT flag for tmpfs.
2) Keep O_DIRECT flag for other filesystem.
In this case, user still can run aio02 with different filesystem by 
mounting specified filesystem on $TMPDIR.

Best Regards,
Xiao Yang
> Signed-off-by: Yang Xu<xuyang2018.jy@cn.fujitsu.com>
> ---
>   testcases/kernel/io/aio/aio02.c | 9 ++++++---
>   1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/testcases/kernel/io/aio/aio02.c b/testcases/kernel/io/aio/aio02.c
> index e283afba9..205d1b088 100644
> --- a/testcases/kernel/io/aio/aio02.c
> +++ b/testcases/kernel/io/aio/aio02.c
> @@ -17,7 +17,8 @@
>
>   #define AIO_MAXIO 32
>   #define AIO_BLKSIZE (64*1024)
> -
> +#define MNTPOINT   "mnt_point"
> +#define FILE_TEST MNTPOINT"/file"
>   static int wait_count = 0;
>
>   #define DESC_FLAGS_OPR(x, y) .desc = (x == IO_CMD_PWRITE ? "WRITE: " #y: "READ : " #y), \
> @@ -206,7 +207,7 @@ static void test_io(unsigned int n)
>   	int status;
>   	struct testcase *tc = testcases + n;
>
> -	status = io_tio("file", tc->flags, tc->operation);
> +	status = io_tio(FILE_TEST, tc->flags, tc->operation);
>   	if (status)
>   		tst_res(TFAIL, "%s, status = %d", tc->desc, status);
>   	else
> @@ -214,7 +215,9 @@ static void test_io(unsigned int n)
>   }
>
>   static struct tst_test test = {
> -	.needs_tmpdir = 1,
> +	.mount_device = 1,
> +	.mntpoint = MNTPOINT,
> +	.needs_root = 1,
>   	.test = test_io,
>   	.tcnt = ARRAY_SIZE(testcases),
>   };