[LTP] [PATCH] madvise09:Change PAGES size to the value more than 32

[Thadeu Lima de Souza Cascardo <cascardo@canonical.com>]

On Wed, Sep 04, 2019 at 02:00:23PM +0800, shuang.qiu@oracle.com wrote:
> From: Shuang Qiu <shuang.qiu@oracle.com>
> 
> In upstream patch 1a61ab (mm: memcontrol: replace zone summing with lruvec_page_state()),
> it modify the lruvec state in batch,equal and less than 32 MADV_FREE pages will not trigger
> the account of lruvec_stat,and will not be free in memory pressure either.
> So the testcase may fail with:
> ...
> madvise09.c:219: INFO: Memory hungry child 6178 started, try 10
> madvise09.c:254: INFO: Memory map: pppppppppppppppppppppppppppppppp
> madvise09.c:259: FAIL: No MADV_FREE page was freed on low memory
> ...
> Change the PAGES to the value more than 32 can fix such issue.
> 
> Signed-off-by: Shuang Qiu <shuang.qiu@oracle.com>

On ppc64le, I was getting retries, as OOM was getting hit. The test would
ultimately time out. This fixes it for me.

Thanks.
Cascardo.

Tested-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

> ---
>  testcases/kernel/syscalls/madvise/madvise09.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/testcases/kernel/syscalls/madvise/madvise09.c b/testcases/kernel/syscalls/madvise/madvise09.c
> index 01075f6..3759053 100644
> --- a/testcases/kernel/syscalls/madvise/madvise09.c
> +++ b/testcases/kernel/syscalls/madvise/madvise09.c
> @@ -57,7 +57,7 @@ static int sleep_between_faults;
>  
>  static int swap_accounting_enabled;
>  
> -#define PAGES 32
> +#define PAGES 64
>  #define TOUCHED_PAGE1 0
>  #define TOUCHED_PAGE2 10
>  
> -- 
> 1.9.1
> 
> 
> -- 
> Mailing list info: https://lists.linux.it/listinfo/ltp