From: Ye Liu <ye.liu@linux.dev>
To: Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>
Cc: Ye Liu <liuye@kylinos.cn>, Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Brendan Jackman <jackmanb@google.com>,
Johannes Weiner <hannes@cmpxchg.org>, Zi Yan <ziy@nvidia.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH] mm/page_alloc: simplify lowmem_reserve max calculation
Date: Thu, 14 Aug 2025 17:00:52 +0800 [thread overview]
Message-ID: <20250814090053.22241-1-ye.liu@linux.dev> (raw)
From: Ye Liu <liuye@kylinos.cn>
Use max() macro to simplify the calculation of maximum lowmem_reserve
value in calculate_totalreserve_pages(), instead of open-coding the
comparison. The functionality remains identical.
Signed-off-by: Ye Liu <liuye@kylinos.cn>
---
mm/page_alloc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 64872214bc7d..8a55a4951d19 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6236,8 +6236,7 @@ static void calculate_totalreserve_pages(void)
/* Find valid and maximum lowmem_reserve in the zone */
for (j = i; j < MAX_NR_ZONES; j++) {
- if (zone->lowmem_reserve[j] > max)
- max = zone->lowmem_reserve[j];
+ max = max(max, zone->lowmem_reserve[j]);
}
/* we treat the high watermark as reserved pages. */
--
2.43.0
next reply other threads:[~2025-08-14 9:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-14 9:00 Ye Liu [this message]
2025-08-14 14:07 ` Johannes Weiner
2025-08-15 1:59 ` Ye Liu
2025-08-15 2:01 ` Zi Yan
2025-08-14 14:47 ` Zi Yan
2025-08-15 1:38 ` Ye Liu
2025-08-15 1:59 ` Zi Yan
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