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=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 562D8C2D0ED for ; Fri, 27 Mar 2020 17:06:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 299952073B for ; Fri, 27 Mar 2020 17:06:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=shutemov-name.20150623.gappssmtp.com header.i=@shutemov-name.20150623.gappssmtp.com header.b="d5Htk3uO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727935AbgC0RG0 (ORCPT ); Fri, 27 Mar 2020 13:06:26 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:40902 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727242AbgC0RGH (ORCPT ); Fri, 27 Mar 2020 13:06:07 -0400 Received: by mail-lj1-f195.google.com with SMTP id 19so10949928ljj.7 for ; Fri, 27 Mar 2020 10:06:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LPiYQU9lO5biWqzE5gRv0d6ffIyj9ud5WElOpnXNcJU=; b=d5Htk3uOkHuKfVYikbo3VhAb7ueKn1UtMjJ3iVQP08RCYqdyTKISnELs2Dyop9JaJ3 bzr4lCd5P9s/Q9gpLTlwi2eRVwFYDH3AcUues7X4g77QQdBSKz4EaF/b1PFI9JaS+IJi 9L4IvqJgSIXGzqgjdlBYa/YnGsj9EqNeS+XWebQUky3B/Jw6Yhxt9scxvx028I2XJrL1 f7oic21ds5O1pImnl41obLTQFNd2RVNKSnE55HhvlltzFV/D7jJkUaW01ZeipjZwKlVr cannKNm7n57jy9KSJsZMWOAL0hDklcFlfRiWwORCfF3IsuHoCNpsQA6ctrR8jiTYkn5i PrDQ== 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:mime-version :content-transfer-encoding; bh=LPiYQU9lO5biWqzE5gRv0d6ffIyj9ud5WElOpnXNcJU=; b=Kt+pSxQSiyGOGip3NLIsmXSZISq62+zpclmtA4+/Xx6SOM02eVj9JDB2nYSwspvJYs 5eptqwOBBHT2PuoqZDsyuivtE0dxDstrdt6/oC6qs8QhLC6eNhXvqTRG3ykX61mTxaks eOusMuAXDmcsCPG/08NwOjZOqbxbUGQOabe27vjKFWk9TS4RN+cltM8b0L7K71o/wLt+ Ira+L1p94GdhqyjR++dAviqllhowMgRSjUsr0Jsh5nxah3nex9DR3dw5OH2i2an5dFVv 6bOt3pl1G4UMq/cmMI3JoTwsVl62Bm4sqQ1n+66K8FlMI39EyH1XZAp1m9wjL9WeQkKK YTzg== X-Gm-Message-State: AGi0PuZrKMP1s6U3XDqZjiBZ8plghqykLJWhvQX/+Xyp4xfVob8KG3zS QQkf+AhVdCfY8YsAZ1VueodDVw== X-Google-Smtp-Source: APiQypJLALeXcx+yXtPsyw9ITyRblR+4nUxsp2NRHWMj6K+9Xm6k69PdiGCGFwzQWP0Q1zx9TpUdcw== X-Received: by 2002:a2e:8195:: with SMTP id e21mr5295041ljg.49.1585328763673; Fri, 27 Mar 2020 10:06:03 -0700 (PDT) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id i11sm3265630lfo.84.2020.03.27.10.06.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Mar 2020 10:06:03 -0700 (PDT) From: "Kirill A. Shutemov" X-Google-Original-From: "Kirill A. Shutemov" Received: by box.localdomain (Postfix, from userid 1000) id 5679F100D24; Fri, 27 Mar 2020 20:06:07 +0300 (+03) To: akpm@linux-foundation.org, Andrea Arcangeli Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCH 0/7] thp/khugepaged improvements and CoW semantics Date: Fri, 27 Mar 2020 20:05:54 +0300 Message-Id: <20200327170601.18563-1-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.26.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The patchset adds khugepaged selftest (anon-THP only for now), expands cases khugepaged can handle and switches anon-THP copy-on-write handling to 4k. Please review and consider applying. Kirill A. Shutemov (7): khugepaged: Add self test khugepaged: Do not stop collapse if less than half PTEs are referenced khugepaged: Drain LRU add pagevec to get rid of extra pins khugepaged: Allow to callapse a page shared across fork khugepaged: Allow to collapse PTE-mapped compound pages thp: Change CoW semantics for anon-THP khugepaged: Introduce 'max_ptes_shared' tunable Documentation/admin-guide/mm/transhuge.rst | 7 + mm/huge_memory.c | 247 +----- mm/khugepaged.c | 124 ++- tools/testing/selftests/vm/Makefile | 1 + tools/testing/selftests/vm/khugepaged.c | 924 +++++++++++++++++++++ 5 files changed, 1057 insertions(+), 246 deletions(-) create mode 100644 tools/testing/selftests/vm/khugepaged.c -- 2.26.0