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SubjectRe: [PATCH] mm: skip reserved page for kmem leak scanning
On Fri, Aug 26, 2022 at 11:13 AM zhaoyang.huang
<zhaoyang.huang@unisoc.com> wrote:
>
> From: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
>
> It is no need to scan reserved page, skip it.
>
> Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
> ---
> mm/kmemleak.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/kmemleak.c b/mm/kmemleak.c
> index a182f5d..c546250 100644
> --- a/mm/kmemleak.c
> +++ b/mm/kmemleak.c
> @@ -1471,7 +1471,7 @@ static void kmemleak_scan(void)
> if (page_zone(page) != zone)
> continue;
> /* only scan if page is in use */
> - if (page_count(page) == 0)
> + if (page_count(page) == 0 || PageReserved(page))
Sorry for previous stupid code by my faint, correct it here
> continue;
> scan_block(page, page + 1, NULL);
> if (!(pfn & 63))
> --
> 1.9.1
>

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