From patchwork Wed Aug 12 01:31:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11709935 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 CAFF7109B for ; Wed, 12 Aug 2020 01:31:52 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 98A892076C for ; Wed, 12 Aug 2020 01:31:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="GRgyTR/8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 98A892076C 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 91B478D0008; Tue, 11 Aug 2020 21:31:51 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 8A4808D0001; Tue, 11 Aug 2020 21:31:51 -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 792DE8D0008; Tue, 11 Aug 2020 21:31:51 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0217.hostedemail.com [216.40.44.217]) by kanga.kvack.org (Postfix) with ESMTP id 606968D0001 for ; Tue, 11 Aug 2020 21:31:51 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 57A415850 for ; Wed, 12 Aug 2020 01:31:50 +0000 (UTC) X-FDA: 77140189980.15.deer28_2e0474126fe7 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin15.hostedemail.com (Postfix) with ESMTP id C53791814B0C9 for ; Wed, 12 Aug 2020 01:31:49 +0000 (UTC) X-Spam-Summary: 1,0,0,4679d243ccfae109,d41d8cd98f00b204,akpm@linux-foundation.org,,RULES_HIT:41:69:355:379:800:960:967:968:973:988:989:1260:1263:1345:1359:1381:1431:1434:1437:1534:1542:1711:1730:1747:1777:1792:2393:2525:2559:2563:2682:2685:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3353:3865:3866:3871:3872:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4250:4321:4605:5007:6119:6261:6653:7576:9025:9545:9592:10004:10913:11026:11232:11473:11658:11914:12043:12048:12296:12297:12438:12517:12519:12555:12679:12783:12986:14093:14181:14721:14849:21060:21080:21433:21451:21627:21819:21939:21990:30054:30064:30070,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-64.100.201.201 62.2.0.100;04yf5s89e5pzf97w9wogkbp1audh4yc8cu5d1qxr969qk4fm3wmeu67b65aepkc.dkyt7fyctbmkoppob8nwb5qd7xe8gqtx55d6bph14idnxp9xbu789qyecaq9ozp.y-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0, DNSBL:ne X-HE-Tag: deer28_2e0474126fe7 X-Filterd-Recvd-Size: 3920 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf35.hostedemail.com (Postfix) with ESMTP for ; Wed, 12 Aug 2020 01:31:49 +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 6DCB22076C; Wed, 12 Aug 2020 01:31:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597195908; bh=6PQoj1I2BFw0VaGBAtiuBfSthDm1RaUJRu32hNnkB/c=; h=Date:From:To:Subject:In-Reply-To:From; b=GRgyTR/86Mg49GfBFyU6kMV1yhY1xIs/JHqYL8mVFiO9+DYnM+B7JBLmzaqbaDkFw jfNjKauRjtEc3Fl9eMfRnKWZ1lFb16XY6oNfnNCc1NtWt4btMdBivEg2wVg+dYZbGf gclC0ZwPgZM3XRnilcN11zrxl5XaipedAiGJ/qjM= Date: Tue, 11 Aug 2020 18:31:48 -0700 From: Andrew Morton To: akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, yang.shi@linux.alibaba.com, ziy@nvidia.com Subject: [patch 029/165] mm: thp: remove debug_cow switch Message-ID: <20200812013148.BsZZPzfR3%akpm@linux-foundation.org> In-Reply-To: <20200811182949.e12ae9a472e3b5e27e16ad6c@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: C53791814B0C9 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: Yang Shi Subject: mm: thp: remove debug_cow switch Since commit 3917c80280c93a7123f ("thp: change CoW semantics for anon-THP"), the CoW page fault of THP has been rewritten, debug_cow is not used anymore. So, just remove it. Link: http://lkml.kernel.org/r/1592270980-116062-1-git-send-email-yang.shi@linux.alibaba.com Signed-off-by: Yang Shi Reviewed-by: Zi Yan Cc: Kirill A. Shutemov Signed-off-by: Andrew Morton --- include/linux/huge_mm.h | 7 ------- mm/huge_memory.c | 21 --------------------- 2 files changed, 28 deletions(-) --- a/include/linux/huge_mm.h~mm-thp-remove-debug_cow-switch +++ a/include/linux/huge_mm.h @@ -181,13 +181,6 @@ static inline bool transhuge_vma_suitabl #define transparent_hugepage_use_zero_page() \ (transparent_hugepage_flags & \ (1<