The patch titled
Subject: mm/vmstat: correct some wrong comments based-on fls()
has been added to the -mm mm-unstable branch. Its filename is
mm-vmstat-correct-some-wrong-comments-based-on-fls.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-vmstat-correct-some-wrong-comments-based-on-fls.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Chao Xu <Chao.Xu9@xxxxxxxxxxxxx>
Subject: mm/vmstat: correct some wrong comments based-on fls()
Date: Sat, 29 Oct 2022 12:44:36 +0800
The threshold should grow logarithmically, using fls() as an easy
approximation. But there are some errors in fls(mem) and fls(Processors).
It is misleading so let's correct it.
Link: https://lkml.kernel.org/r/20221029044436.198169-1-xuchao066@xxxxxxx
Signed-off-by: Chao Xu <Chao.Xu9@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmstat.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
--- a/mm/vmstat.c~mm-vmstat-correct-some-wrong-comments-based-on-fls
+++ a/mm/vmstat.c
@@ -241,17 +241,17 @@ int calculate_normal_threshold(struct zo
* 28 2 2 4-8 GB 7
* 32 2 2 8-16 GB 8
* 4 2 2 <128M 1
- * 30 4 3 2-4 GB 5
+ * 30 4 3 2-4 GB 6
* 48 4 3 8-16 GB 8
- * 32 8 4 1-2 GB 4
+ * 32 8 4 1-2 GB 5
* 32 8 4 0.9-1GB 4
* 10 16 5 <128M 1
* 40 16 5 900M 4
- * 70 64 7 2-4 GB 5
- * 84 64 7 4-8 GB 6
- * 108 512 9 4-8 GB 6
- * 125 1024 10 8-16 GB 8
- * 125 1024 10 16-32 GB 9
+ * 70 64 7 2-4 GB 6
+ * 84 64 7 4-8 GB 7
+ * 108 512 10 4-8 GB 7
+ * 125 1024 11 8-16 GB 8
+ * 125 1024 11 16-32 GB 9
*/
mem = zone_managed_pages(zone) >> (27 - PAGE_SHIFT);
_
Patches currently in -mm which might be from Chao.Xu9@xxxxxxxxxxxxx are
mm-vmstat-correct-some-wrong-comments-based-on-fls.patch
