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, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 46F81C76192 for ; Tue, 16 Jul 2019 15:27:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1B0382173E for ; Tue, 16 Jul 2019 15:27:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZZcN5b+L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387854AbfGPP1R (ORCPT ); Tue, 16 Jul 2019 11:27:17 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:39366 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728390AbfGPP1R (ORCPT ); Tue, 16 Jul 2019 11:27:17 -0400 Received: by mail-pf1-f195.google.com with SMTP id f17so5295917pfn.6 for ; Tue, 16 Jul 2019 08:27:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=HxedKsOlRoMuH0YAi3w5n8XgUhrmrip/11U2C/L62+s=; b=ZZcN5b+L7iWZo3iArIcmAzXPEGsGU2NeexpNaf6SNsgDDLXVphrRU+sEQ/hrnLmpHJ 8xzFTZLinKyISv9p9ErZE3Rpojfjh4dJRIelGwba8icXvxJuBnCo/uVUVCOp0JOWEnw3 fpn/IitK8VLeIrMfR/WNCF4sRuf9xqZGibk1xdzmDjl6X6/Nzp/m9GYv5ocHES1YT9cM 8jX7ZPtCUIg4kAocab0gZTzzbVghHoApiZU6YzVtvvDUrnqV4CjJrnuf1Q6gBGHlKEp8 v2pI43Vtkp2slOxzSVSRCwd94hwjb22RBp8pJHGbvN5pHST/X8YUNxvpEIAlNjWh1hND a2wQ== 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=HxedKsOlRoMuH0YAi3w5n8XgUhrmrip/11U2C/L62+s=; b=lKPsr/N6f0zLpwdGBmKNOuasKLWgcJXYCuPb3l45YYEiuUeSWvtYlOkGUQDgtdG1Mx x/NIUaPYDo9Cc8tfigmesDLzVHgUtuu0VGH+SH3xBrKS26tR/Vu5RtZj90WzEOzyzkT/ pHMYoh2WW+LN0fBTTqKL4mDeqaSPxvOP3OjcMveTRxQuqpd7DlwByTLfwHlGLbkOTHHT 8JL16zzeiIc8wauOx8fSVRTrRAhpQSo5xNXihe6JtJ3X2z2irrhUrhMql54gLRmePfBE rCBW61mkM2tjk2MA8QXHV2VghjFwCmNVRBPHwfPdTp1C+SyP/GGKrt5z2tD0s18fraNG McHQ== X-Gm-Message-State: APjAAAX9moFS0fqdUDdyMkNBCo4myby787/fCjiQz6nL/WRTbgCtAdiK UY6kiWZukYLrThJZp4tIU9Q= X-Google-Smtp-Source: APXvYqweQYeGtHEfqywtbTQqGntIQfKXECduapNMxbzT+2waGPhyg1ck1l+5eDii4IS1zlf522DXDw== X-Received: by 2002:a17:90a:37ac:: with SMTP id v41mr35699482pjb.6.1563290836876; Tue, 16 Jul 2019 08:27:16 -0700 (PDT) Received: from localhost.localdomain.localdomain ([2408:823c:c11:bf0:b8c3:8577:bf2f:2]) by smtp.gmail.com with ESMTPSA id h9sm27453651pgk.10.2019.07.16.08.27.08 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 16 Jul 2019 08:27:16 -0700 (PDT) From: Pengfei Li To: akpm@linux-foundation.org, willy@infradead.org Cc: urezki@gmail.com, rpenyaev@suse.de, peterz@infradead.org, guro@fb.com, rick.p.edgecombe@intel.com, rppt@linux.ibm.com, aryabinin@virtuozzo.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Pengfei Li Subject: [PATCH v6 0/2] mm/vmalloc.c: improve readability and rewrite vmap_area Date: Tue, 16 Jul 2019 23:26:54 +0800 Message-Id: <20190716152656.12255-1-lpf.vector@gmail.com> X-Mailer: git-send-email 2.21.0 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 v5 -> v6 * patch 2: keep the comment in s_show() v4 -> v5 * Base on next-20190716 * patch 1: From Uladzislau Rezki (Sony) (author) - https://lkml.org/lkml/2019/7/16/276 * patch 2: Use v3 v3 -> v4: * Base on next-20190711 * patch 1: From: Uladzislau Rezki (Sony) (author) - https://lkml.org/lkml/2019/7/3/661 * patch 2: Modify the layout of struct vmap_area for readability v2 -> v3: * patch 1-4: Abandoned * patch 5: - Eliminate "flags" (suggested by Uladzislau Rezki) - Base on https://lkml.org/lkml/2019/6/6/455 and https://lkml.org/lkml/2019/7/3/661 v1 -> v2: * patch 3: Rename __find_vmap_area to __search_va_in_busy_tree instead of __search_va_from_busy_tree. * patch 5: Add motivation and necessary test data to the commit message. * patch 5: Let va->flags use only some low bits of va_start instead of completely overwriting va_start. The current implementation of struct vmap_area wasted space. After applying this commit, sizeof(struct vmap_area) has been reduced from 11 words to 8 words. Pengfei Li (1): mm/vmalloc: modify struct vmap_area to reduce its size Uladzislau Rezki (Sony) (1): mm/vmalloc: do not keep unpurged areas in the busy tree include/linux/vmalloc.h | 20 +++++++---- mm/vmalloc.c | 76 +++++++++++++++++++++++++++++------------ 2 files changed, 67 insertions(+), 29 deletions(-) -- 2.21.0