The patch titled
Subject: mm: page_alloc: use div64_ul() instead of do_div()
has been added to the -mm mm-unstable branch. Its filename is
mm-page_alloc-use-div64_ul-instead-of-do_div.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_alloc-use-div64_ul-instead-of-do_div.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: Thorsten Blum <thorsten.blum@xxxxxxxxxx>
Subject: mm: page_alloc: use div64_ul() instead of do_div()
Date: Wed, 28 Feb 2024 23:49:12 +0100
Fixes Coccinelle/coccicheck warning reported by do_div.cocci.
Compared to do_div(), div64_ul() does not implicitly cast the divisor and
does not unnecessarily calculate the remainder.
Link: https://lkml.kernel.org/r/20240228224911.1164-2-thorsten.blum@xxxxxxxxxx
Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/page_alloc.c~mm-page_alloc-use-div64_ul-instead-of-do_div
+++ a/mm/page_alloc.c
@@ -5850,7 +5850,7 @@ static void __setup_per_zone_wmarks(void
spin_lock_irqsave(&zone->lock, flags);
tmp = (u64)pages_min * zone_managed_pages(zone);
- do_div(tmp, lowmem_pages);
+ tmp = div64_ul(tmp, lowmem_pages);
if (is_highmem(zone) || zone_idx(zone) == ZONE_MOVABLE) {
/*
* __GFP_HIGH and PF_MEMALLOC allocations usually don't
_
Patches currently in -mm which might be from thorsten.blum@xxxxxxxxxx are
mm-page_alloc-use-div64_ul-instead-of-do_div.patch
