From patchwork Tue Jun 2 20:15:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11584457 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8778F90 for ; Tue, 2 Jun 2020 20:15:05 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 4B143206E2 for ; Tue, 2 Jun 2020 20:15:05 +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 4B143206E2 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) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 2A6FA80052; Tue, 2 Jun 2020 16:15:04 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org 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-Original-To: linux-mm@kvack.org 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-Spam-Summary: 2,0,0,ab12e1db789ed135,d41d8cd98f00b204,akpm@linux-foundation.org,,RULES_HIT:41:355:379:800:960:967:968:973:988:989:1260:1263:1345:1359:1381:1431:1534:1540:1711:1714:1730:1747:1777:1792:2393:2525:2559:2563:2682:2685:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3350:3865:3867:3870:3872:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:4419:5007:6261:6653:7514:7576:9025:9391:9545:10004:10913:11026:11473:11658:11914:12043:12048:12296:12297:12438:12517:12519:12555:12679:12783:12986:13069:13311:13357:13846:14094:14181:14384:14721:14777:14849:21080:21433:21451:21611:21627:21819:21939:30054,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-64.100.201.201 62.2.0.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:1,LUA_SUMMARY:none 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: