From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 42873C433B4 for ; Wed, 12 May 2021 14:47:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0275561411 for ; Wed, 12 May 2021 14:47:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231216AbhELOs6 (ORCPT ); Wed, 12 May 2021 10:48:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230202AbhELOs5 (ORCPT ); Wed, 12 May 2021 10:48:57 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 051E9C061574 for ; Wed, 12 May 2021 07:47:49 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id t11so840992pjm.0 for ; Wed, 12 May 2021 07:47:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=ETqsrv1jzN5EGAkkcRRQ5nZ0wEonlAPtIWyZWxP7xo8=; b=ltDzcLn0aP1VqK+owmm2BBYuZjyYqFObprD+vA5zzaBLfAgFSS08UcKeoPRvXx515h GGhwxc2TdR2zqp775HMciphgccxbGrWEXw7ow0QuIh3ngYWxTu4T2DEabcUYUC/NPeme yfKaHsca86gr9XVJSIjnZcUKU5+TePpF0QrgDaVLp4FJYFgF9Z7vskF9Kl7OCGMoDV0W OJnQjttpYnde4dE8BY90udSI+UQz/QsBG68CruD4qM8LNYwLA1kv+seKQTzwwbH8WHBD FAODLdtFz9wXcxxxt5gZ6FuPz/cjRrRv5dvPCqZCPUuQTTP6GGRF1gJrXd9FvpnhnULW 3j5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=ETqsrv1jzN5EGAkkcRRQ5nZ0wEonlAPtIWyZWxP7xo8=; b=FkXsY9VyCBUK1ZEiaMvGc7nKpkR7u+MiznsXhtvaLZjTb8ujZSy7DxJU2KCUvqeuVd /KSJBZhzF2jRQOq2eKlutbpgC22UiZ0cSljhEZxMYldYWDZAY+ruuoaiow6zvGFsvOrL 6uRi2oJ4m9BwHWg825BikIaxxjKDccGR8SJgaGXOql+GIij7OIR2P2ap0EYj8iR75mZZ 8HVpAkh67gAK8ou41N2W6be9mMwtXscRyQ5N8iKQW0Q7scdl0SWQE/pMD+9d5dkcm9GR guaGauMJ33WxEsZVwawQmmf3r5AQXK0rHPJMTgs3Q1xUCt8xEgze5ah9lZOXey9FINOn w/VA== X-Gm-Message-State: AOAM533MNBwT5buWhkuVMYDCJ0zxS1kTO0JQlePMrrRNpwoV+nceWksJ L/KDOdOoNDJEFqSDAL/uetc= X-Google-Smtp-Source: ABdhPJwv951ishoPEC4jhNH4EaSWywMEJopdfEnqAZ3ngx2xh6hzO6ZeGJEvW+tsTj8ESVWGDemzow== X-Received: by 2002:a17:902:d213:b029:ed:35bb:271b with SMTP id t19-20020a170902d213b02900ed35bb271bmr35526994ply.71.1620830868593; Wed, 12 May 2021 07:47:48 -0700 (PDT) Received: from wuchi.mioffice.cn ([43.224.245.180]) by smtp.gmail.com with ESMTPSA id v130sm127786pfc.25.2021.05.12.07.47.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 May 2021 07:47:48 -0700 (PDT) From: Chi Wu To: akpm@linux-foundation.org Cc: axboe@fb.com, hcochran@kernelspring.com, jack@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mszeredi@redhat.com, sedat.dilek@gmail.com, tj@kernel.org, Chi Wu Subject: [PATCH] mm/page-writeback: Use __this_cpu_inc() in account_page_dirtied() Date: Wed, 12 May 2021 22:47:42 +0800 Message-Id: <20210512144742.4764-1-wuchi.zero@gmail.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As account_page_dirtied() was always protected by xa_lock_irqsave(), so using __this_cpu_inc() is better. Signed-off-by: Chi Wu --- mm/page-writeback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 0062d5c57d41..e3901d0d329e 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2436,7 +2436,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping) inc_wb_stat(wb, WB_DIRTIED); task_io_account_write(PAGE_SIZE); current->nr_dirtied++; - this_cpu_inc(bdp_ratelimits); + __this_cpu_inc(bdp_ratelimits); mem_cgroup_track_foreign_dirty(page, wb); } -- 2.17.1