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[82.135.80.35]) by smtp.gmail.com with ESMTPSA id q11-20020a17090622cb00b00a431e4d5deasm2292785eja.155.2024.02.28.14.52.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Feb 2024 14:52:20 -0800 (PST) From: Thorsten Blum To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Thorsten Blum Subject: [PATCH] mm: page_alloc: Use div64_ul() instead of do_div() Date: Wed, 28 Feb 2024 23:49:12 +0100 Message-ID: <20240228224911.1164-2-thorsten.blum@toblux.com> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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) =20 spin_lock_irqsave(&zone->lock, flags); tmp =3D (u64)pages_min * zone_managed_pages(zone); - do_div(tmp, lowmem_pages); + tmp =3D div64_ul(tmp, lowmem_pages); if (is_highmem(zone) || zone_idx(zone) =3D=3D ZONE_MOVABLE) { /* * __GFP_HIGH and PF_MEMALLOC allocations usually don't --=20 2.44.0