From: Enze Li <lienze@kylinos.cn>
To: sj@kernel.org
Cc: damon@lists.linux.dev, linux-mm@kvack.org, lienze@kylinos.cn
Subject: [PATCH] mm/damon: make region calculations more precise
Date: Wed, 21 May 2025 15:07:47 +0800 [thread overview]
Message-ID: <20250521070747.1458270-1-lienze@kylinos.cn> (raw)
The damon_sz_region() function misses counting one element when
calculating region size, which leads to inaccurate results. This patch
corrects the size calculation by properly accounting for all elements.
Signed-off-by: Enze Li <lienze@kylinos.cn>
---
include/linux/damon.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/damon.h b/include/linux/damon.h
index 47e36e6ea203..70473863f7fe 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -808,7 +808,7 @@ static inline struct damon_region *damon_first_region(struct damon_target *t)
static inline unsigned long damon_sz_region(struct damon_region *r)
{
- return r->ar.end - r->ar.start;
+ return r->ar.end - r->ar.start + 1;
}
base-commit: 4a95bc121ccdaee04c4d72f84dbfa6b880a514b6
--
2.43.0
next reply other threads:[~2025-05-21 7:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-21 7:07 Enze Li [this message]
2025-05-21 17:18 ` SeongJae Park
2025-05-22 1:53 ` Enze Li
2025-05-22 17:16 ` SeongJae Park
2025-05-29 5:53 ` kernel test robot
2025-05-29 16:41 ` SeongJae Park
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