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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 31029C433E1 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 EBD0E2076C for ; Wed, 12 Aug 2020 01:31:51 +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 EBD0E2076C 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) Received: by kanga.kvack.org (Postfix, from userid 40) id 8A4808D0001; Tue, 11 Aug 2020 21:31:51 -0400 (EDT) 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-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-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<