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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 DA5ACC433E0 for ; Tue, 2 Jun 2020 20:15:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 95052206E2 for ; Tue, 2 Jun 2020 20:15:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="TibyoEhJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 95052206E2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 322828005C; Tue, 2 Jun 2020 16:15:04 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2A6FA80052; Tue, 2 Jun 2020 16:15:04 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 195258005C; Tue, 2 Jun 2020 16:15:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0128.hostedemail.com [216.40.44.128]) by kanga.kvack.org (Postfix) with ESMTP id F0D5680052 for ; Tue, 2 Jun 2020 16:15:03 -0400 (EDT) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id B5487E663F for ; Tue, 2 Jun 2020 20:15:03 +0000 (UTC) X-FDA: 76885375686.26.rest15_83757c327b20e Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin26.hostedemail.com (Postfix) with ESMTP id 92E9C181544B1 for ; Tue, 2 Jun 2020 20:15:03 +0000 (UTC) X-HE-Tag: rest15_83757c327b20e X-Filterd-Recvd-Size: 2369 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf02.hostedemail.com (Postfix) with ESMTP for ; Tue, 2 Jun 2020 20:15:03 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5B0B7207D5; Tue, 2 Jun 2020 20:15:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591128902; bh=4fkHFJVgpZtadg3Rr/Hy4UGR+nwiEXVxHMlcSR4I3YY=; h=Date:From:To:Subject:In-Reply-To:From; b=TibyoEhJ52EVjA4p9IrlHYxxyKQSNYW7pLCu0jdKIiqTOaqf5fv7UxgmrOZT5m17P ZZ9NfwHdBwO9hUqasRwZrNglQXj+S0CROUTB/DIJjZZGehLaIRHnHQJw+WZNG2nNBq Lx+nNH3Cnv/BCBiKKWN+92acxDZR6vyPpUpaRS+c= Date: Tue, 02 Jun 2020 13:15:01 -0700 From: Andrew Morton To: akpm@linux-foundation.org, chenqiwu@xiaomi.com, linux-mm@kvack.org, mhocko@suse.com, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, willy@infradead.org Subject: [patch 087/128] mm/memory: remove unnecessary pte_devmap case in copy_one_pte() Message-ID: <20200602201501.RugVRVDk3%akpm@linux-foundation.org> In-Reply-To: <20200602130930.8e8f10fa6f19e3766e70921f@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 92E9C181544B1 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: chenqiwu Subject: mm/memory: remove unnecessary pte_devmap case in copy_one_pte() Since commit 25b2995a35b6 ("mm: remove MEMORY_DEVICE_PUBLIC support"), the assignment to 'page' for pte_devmap case has been unnecessary. Let's remove it. [willy@infradead.org: changelog] Link: http://lkml.kernel.org/r/1587349685-31712-1-git-send-email-qiwuchen55@gmail.com Signed-off-by: chenqiwu Acked-by: Michal Hocko Reviewed-by: Matthew Wilcox Signed-off-by: Andrew Morton --- mm/memory.c | 2 -- 1 file changed, 2 deletions(-) --- a/mm/memory.c~mm-memory-remove-unnecessary-pte_devmap-case-in-copy_one_pte +++ a/mm/memory.c @@ -802,8 +802,6 @@ copy_one_pte(struct mm_struct *dst_mm, s get_page(page); page_dup_rmap(page, false); rss[mm_counter(page)]++; - } else if (pte_devmap(pte)) { - page = pte_page(pte); } out_set_pte: _