From nobody Sat Apr 11 06:46:30 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B807C00140 for ; Mon, 15 Aug 2022 04:06:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230116AbiHOEGC (ORCPT ); Mon, 15 Aug 2022 00:06:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229621AbiHOEF6 (ORCPT ); Mon, 15 Aug 2022 00:05:58 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9519725DD for ; Sun, 14 Aug 2022 21:05:57 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 30A2B6102C for ; Mon, 15 Aug 2022 04:05:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8FF50C433C1; Mon, 15 Aug 2022 04:05:54 +0000 (UTC) From: Huacai Chen To: Huacai Chen Cc: loongarch@lists.linux.dev, Xuefeng Li , Guo Ren , Xuerui Wang , Jiaxun Yang , linux-kernel@vger.kernel.org, Huacai Chen Subject: [PATCH] LoongArch: mm: avoid unnecessary page fault retires on shared memory types Date: Mon, 15 Aug 2022 12:05:54 +0800 Message-Id: <20220815040554.1455722-1-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Commit d92725256b4f22d0 ("mm: avoid unnecessary page fault retires on shared memory types") modifies do_page_fault() to handle the VM_FAULT_ COMPLETED case, but forget to change for LoongArch, so fix it as other architectures does. Fixes: d92725256b4f22d0 ("mm: avoid unnecessary page fault retires on share= d memory types") Signed-off-by: Huacai Chen Reviewed-by: Guo Ren --- arch/loongarch/mm/fault.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/loongarch/mm/fault.c b/arch/loongarch/mm/fault.c index 605579b19a00..1ccd53655cab 100644 --- a/arch/loongarch/mm/fault.c +++ b/arch/loongarch/mm/fault.c @@ -216,6 +216,10 @@ static void __kprobes __do_page_fault(struct pt_regs *= regs, return; } =20 + /* The fault is fully completed (including releasing mmap lock) */ + if (fault & VM_FAULT_COMPLETED) + return; + if (unlikely(fault & VM_FAULT_RETRY)) { flags |=3D FAULT_FLAG_TRIED; =20 --=20 2.31.1