diff mbox series

mm: page_alloc: Use div64_ul() instead of do_div()

Message ID 20240228224911.1164-2-thorsten.blum@toblux.com
State New
Headers
Series mm: page_alloc: Use div64_ul() instead of do_div() |

Commit Message

Thorsten Blum Feb. 28, 2024, 10:49 p.m. UTC 
  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.

Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
---
 mm/page_alloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 150d4f23b010..dfafec7fba1d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5845,7 +5845,7 @@  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