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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96183C43334 for ; Thu, 2 Jun 2022 14:56:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236284AbiFBO4h (ORCPT ); Thu, 2 Jun 2022 10:56:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236275AbiFBO43 (ORCPT ); Thu, 2 Jun 2022 10:56:29 -0400 Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 82DF32AD5F2 for ; Thu, 2 Jun 2022 07:56:25 -0700 (PDT) Received: by mail-ej1-x629.google.com with SMTP id s12so3261746ejx.3 for ; Thu, 02 Jun 2022 07:56:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=zCSSFQ2L4JXpdmXrE1zZ/i+Swl9oJ6KcROQdZ1N3Ha8=; b=ITZNq6NL54WMwUJGlIfxvdXqqOqhvvCVLdmzhwDzjVYtZoXqK/cElJsPRARmEaVe3x n+jVzu4v3nvlV2c7IJFSYkm5LXlZzZH2ujl0FiOQ9Z9rnMLleRRdaFJDfwhCfmx/Zv8L XNqtFYriy+qTO3tQmgY6aqVsGhqB7Hrww9Ypy9DFg/vMxYzcXYOaSe7BcTjQbClI9Syl 2ysK/PXoPGwVP3Ns8dIW9wZRm500ED6Jr57O8MBF/3Yzl0wY+xHa79x1ja1/6hBc8XCQ BFQLCWqTG0ijre9u3cVf0qTPjjUX9qpH/zObaEgGaXgO+sMB0rMDymdaGebAESww0kax YqHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=zCSSFQ2L4JXpdmXrE1zZ/i+Swl9oJ6KcROQdZ1N3Ha8=; b=fKE3u8/6r7mgfL3kbrt4vcR8AlENqvQ4OBVH/FBV8CvEpW2JttGSeqDELBHmBuoXhs xXGCTfEwaD7mv3Y2PO2R6xAVCk/n4NLpGx7cRMNXMJCvlL13attMApXQVzvAMpaKtXrJ OkgMaHX6hUB+9U7BjddogQH0UHSKNU9blFSooj6N2f1ozi+M746kwPWSLIhHRHmvyMl1 QzNWE1rr5nC8kBLI2qk7IYUpOmdR4PMVeVS9ZNblW4MFVfbQHipiOu00tlqZZX+zk3vs 3+7gPJYklL5Tgqq2VvJwM58qOc5Z/atcGWDpjm5QiVQM2zA965DoPTBWU6sPA8DZV/zC C4Og== X-Gm-Message-State: AOAM530BetAcdeiudihbzcWPrKjZiwAUlehGHRlOxhYZU9alXXmYBbjZ FsuRxcizD5vK5v+0lga4bJ4= X-Google-Smtp-Source: ABdhPJyHM+S/vrNSui5eDofEaJLcLlz5Ju+mz8n8aLIwipJ9sog0+AFkOD1upwCZfy9Aj/HP+VkkrQ== X-Received: by 2002:a17:907:6d1f:b0:6fe:e53b:7f53 with SMTP id sa31-20020a1709076d1f00b006fee53b7f53mr4659077ejc.375.1654181783946; Thu, 02 Jun 2022 07:56:23 -0700 (PDT) Received: from orion.localdomain ([93.99.228.15]) by smtp.gmail.com with ESMTPSA id wj17-20020a170907051100b006fed9a0eb17sm1800254ejb.187.2022.06.02.07.56.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Jun 2022 07:56:23 -0700 (PDT) Received: by orion.localdomain (Postfix, from userid 1003) id 2879BA0884; Thu, 2 Jun 2022 16:56:57 +0200 (CEST) From: =?UTF-8?q?Jakub=20Mat=C4=9Bna?= To: akpm@linux-foundation.org Cc: linux-mm@kvack.org, patches@lists.linux.dev, linux-kernel@vger.kernel.org, vbabka@suse.cz, mhocko@kernel.org, mgorman@techsingularity.net, willy@infradead.org, liam.howlett@oracle.com, hughd@google.com, kirill@shutemov.name, riel@surriel.com, rostedt@goodmis.org, peterz@infradead.org, =?UTF-8?q?Jakub=20Mat=C4=9Bna?= Subject: [PATCH v2 0/2] Refactor of vma_merge and new merge call Date: Thu, 2 Jun 2022 16:56:40 +0200 Message-Id: <20220602145642.16948-1-matenajakub@gmail.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I am currently working on my master's thesis trying to increase number of merges of VMAs currently failing because of page offset incompatibility and difference in their anon_vmas. The following refactor and added merge call included in this series is just two smaller upgrades I created along the way. The rest of the work is still being worked on but was send to mailing list as a RFC: https://lore.kernel.org/all/20220516125405.1675-1-matenajakub@gmail.com/ This patch series is based on tag v5.18. This is third version, I added a mremap expand merge test, added a comment and new variables to the merge call and based the series on a newer kernel version. Jakub Matěna (2): mm: refactor of vma_merge() mm: add merging after mremap resize mm/mmap.c | 87 +++++++++++++++++++++++------------------------------ mm/mremap.c | 8 +++-- 2 files changed, 43 insertions(+), 52 deletions(-) -- 2.35.1