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Message-Id: <20240513032609.650507-1-xu.xin16@zte.com.cn>
Date: Mon, 13 May 2024 03:26:09 +0000
From: xu xin <xu.xin.sc@...il.com>
To: chengming.zhou@...ux.dev
Cc: aarcange@...hat.com,
akpm@...ux-foundation.org,
david@...hat.com,
hughd@...gle.com,
linux-kernel@...r.kernel.org,
linux-mm@...ck.org,
shr@...kernel.io,
xu.xin16@....com.cn,
yang.yang29@....com.cn,
si.hao@....com.cn,
zhouchengming@...edance.com
Subject: [PATCH v2 1/2] mm/ksm: fix ksm_pages_scanned accounting
>Fixes: b348b5fe2b5f ("mm/ksm: add pages scanned metric")
>Acked-by: David Hildenbrand <david@...hat.com>
>Signed-off-by: Chengming Zhou <chengming.zhou@...ux.dev>
>---
> mm/ksm.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
>diff --git a/mm/ksm.c b/mm/ksm.c
>index e1034bf1c937..0f9c491552ff 100644
>--- a/mm/ksm.c
>+++ b/mm/ksm.c
>@@ -2753,18 +2753,16 @@ static void ksm_do_scan(unsigned int scan_npages)
> {
> struct ksm_rmap_item *rmap_item;
> struct page *page;
>- unsigned int npages = scan_npages;
>
>- while (npages-- && likely(!freezing(current))) {
>+ while (scan_npages-- && likely(!freezing(current))) {
> cond_resched();
> rmap_item = scan_get_next_rmap_item(&page);
> if (!rmap_item)
> return;
> cmp_and_merge_page(page, rmap_item);
> put_page(page);
>+ ksm_pages_scanned++;
> }
>-
>- ksm_pages_scanned += scan_npages - npages;
> }
>
> static int ksmd_should_run(void)
Looks good to me.
Reviewed-by: xu xin <xu.xin16@....com.cn>
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