Re: [PATCH v2 2/5] test_printf: Remove separate page_flags variable

[Yafang Shao <laoar.shao@gmail.com>]

On Tue, Oct 19, 2021 at 10:30 PM Matthew Wilcox (Oracle)
<willy@infradead.org> wrote:
>
> Keep flags intact so that we also test what happens when unknown flags
> are passed to %pGp.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

Reviewed-by: Yafang Shao <laoar.shao@gmail.com>

> ---
>  lib/test_printf.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
>
> diff --git a/lib/test_printf.c b/lib/test_printf.c
> index a52c1c3a55ba..4531063afd45 100644
> --- a/lib/test_printf.c
> +++ b/lib/test_printf.c
> @@ -605,17 +605,15 @@ static const struct page_flags_test pft[] = {
>
>  static void __init
>  page_flags_test(int section, int node, int zone, int last_cpupid,
> -               int kasan_tag, int flags, const char *name, char *cmp_buf)
> +               int kasan_tag, unsigned long flags, const char *name,
> +               char *cmp_buf)
>  {
>         unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag};
> -       unsigned long page_flags = 0;
>         unsigned long size = 0;
>         bool append = false;
>         int i;
>
> -       flags &= PAGEFLAGS_MASK;
> -       if (flags) {
> -               page_flags |= flags;
> +       if (flags & PAGEFLAGS_MASK) {
>                 snprintf(cmp_buf + size, BUF_SIZE - size, "%s", name);
>                 size = strlen(cmp_buf);
>  #if SECTIONS_WIDTH || NODES_WIDTH || ZONES_WIDTH || \
> @@ -635,7 +633,7 @@ page_flags_test(int section, int node, int zone, int last_cpupid,
>                         size = strlen(cmp_buf);
>                 }
>
> -               page_flags |= (values[i] & pft[i].mask) << pft[i].shift;
> +               flags |= (values[i] & pft[i].mask) << pft[i].shift;
>                 snprintf(cmp_buf + size, BUF_SIZE - size, "%s=", pft[i].name);
>                 size = strlen(cmp_buf);
>                 snprintf(cmp_buf + size, BUF_SIZE - size, pft[i].fmt,
> @@ -644,7 +642,7 @@ page_flags_test(int section, int node, int zone, int last_cpupid,
>                 append = true;
>         }
>
> -       test(cmp_buf, "%pGp", &page_flags);
> +       test(cmp_buf, "%pGp", &flags);
>  }
>
>  static void __init
> --
> 2.32.0
>


-- 
Thanks
Yafang