From nobody Wed Dec 17 10:54:29 2025 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 04C93EE4996 for ; Mon, 21 Aug 2023 22:52:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231161AbjHUWwE (ORCPT ); Mon, 21 Aug 2023 18:52:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229564AbjHUWwD (ORCPT ); Mon, 21 Aug 2023 18:52:03 -0400 Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9527B11C for ; Mon, 21 Aug 2023 15:52:01 -0700 (PDT) Received: by mail-lf1-x12e.google.com with SMTP id 2adb3069b0e04-4fe655796faso5909379e87.2 for ; Mon, 21 Aug 2023 15:52:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1692658320; x=1693263120; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=2dE6nYqHEQ+L2sVPS8kGSIPJdfk2Hjn75SWNwK5Pro0=; b=Dg76P64PwO3nG6/UvR3SJ2crar4x0BoHHXHT2WzLVI3B0KfOR0p7iPifmdvowi0DTM kTv+5YaHGnFjCRJDRT2wt548tL4R+2HVl1bW0VQULNYNbtlYc3k8kiymEvXSA0NcfLzu gM2zTb4ro68+7meBHP0IJqjDly6p71vXC27Rvst5r9iRtqpmzOGLMyKGu5JD1IP0pKMh u/22droJ8Jg+oUV9vzcW5LsYXaR8XaWEInDN6qFsu9GMOueLm9+9w4yT52Xc8xOcVl9Z ZH35XxNb/plUC7GykePEH8hnYujRj8idtY7aYXibLp9hEpPrdDKVaL0ye9TDF+W/+zv0 eDUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692658320; x=1693263120; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=2dE6nYqHEQ+L2sVPS8kGSIPJdfk2Hjn75SWNwK5Pro0=; b=Qd1ZkocTRHxocoZqPabGIE6HS3Wxbo68t+ZaRtKCtYedmoWZTx2DtYUPBgOsH4rM1d 4vDLa+jAZ2bNBpAVVzg0vfmu7scEubOxIU5DVZUlMgSv8S4ol8CuDx4bqVU5z/wl3pjx P7WdAnohAyAdFloyWYeqL2cZn+F71/4KrB+ChLYBvvfYJP7lTUUQ5y01IPO8me1+Wbzc FsQwX++93tyASUgOkjyIo6nU8DbayxVoyFKsBkpEnTWEd3kmEX6cZsT+627Gv6lHA3s4 wQMXluVEha0mDUfE0BjzSkifv4if2aSadet4qj52hToVoQTNkxU8RtCZiiCl0ocYjqr7 lhBw== X-Gm-Message-State: AOJu0YyKV6I/uUHi5hXDmj9Hdqf4e51qbnfPj7PNaJHXPopmJ8z1QgIJ qBlrWbYHKA/CnLn3MSgePCU= X-Google-Smtp-Source: AGHT+IGZd1jrqEw1dVkjrAJ/bDRy2K3+CfKx1zY6ZqCcI5cvFFx5BK1x2jeM2iJezypWpGy8Oc/erg== X-Received: by 2002:a05:6512:1186:b0:4f8:752f:3722 with SMTP id g6-20020a056512118600b004f8752f3722mr5028337lfr.5.1692658319459; Mon, 21 Aug 2023 15:51:59 -0700 (PDT) Received: from f.. (cst-prg-85-121.cust.vodafone.cz. [46.135.85.121]) by smtp.gmail.com with ESMTPSA id i22-20020a170906445600b009937dbabbdasm7144044ejp.217.2023.08.21.15.51.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Aug 2023 15:51:58 -0700 (PDT) From: Mateusz Guzik To: Liam.Howlett@oracle.com Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, maple-tree@lists.infradead.org, Mateusz Guzik Subject: [PATCH] maple_tree: shrink struct maple_tree from 24 to 16 bytes on LP64 Date: Tue, 22 Aug 2023 00:51:45 +0200 Message-Id: <20230821225145.2169848-1-mjguzik@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" by plugging a padding hole. [sounds like an obvious thing to do, am I missing something?] Signed-off-by: Mateusz Guzik Reviewed-by: Liam R. Howlett --- include/linux/maple_tree.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h index 295548cca8b3..5bdd3ce34cb9 100644 --- a/include/linux/maple_tree.h +++ b/include/linux/maple_tree.h @@ -212,8 +212,8 @@ struct maple_tree { spinlock_t ma_lock; lockdep_map_p ma_external_lock; }; - void __rcu *ma_root; unsigned int ma_flags; + void __rcu *ma_root; }; =20 /** --=20 2.39.2