From nobody Thu Dec 18 15:28:58 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 8A077EE4996 for ; Mon, 21 Aug 2023 14:54:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236179AbjHUOyM (ORCPT ); Mon, 21 Aug 2023 10:54:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232308AbjHUOyL (ORCPT ); Mon, 21 Aug 2023 10:54:11 -0400 Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3681E2 for ; Mon, 21 Aug 2023 07:54:09 -0700 (PDT) Received: by mail-ed1-x52e.google.com with SMTP id 4fb4d7f45d1cf-52683b68c2fso4219117a12.0 for ; Mon, 21 Aug 2023 07:54:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1692629648; x=1693234448; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=1m4RaE6ydVAkfq5tQathmIX+lrXlCmyz18jHgZNKKQY=; b=KabWw+c8I/Tfq6iy6Zw3BpMsiMFZwZrFmreE5dDHMYb8wrNg6SCzun9yMXT8AAbhgM S+tq4B6wtpbjfRf8YNNmDYY2AIgdD+gqfHIC534t4mCLQMPNRBypFa+rrhTeg7mnwkSB SBEqZOuSy8MhRwypoLkahvPPbYxDH3+uYLjWFUTuUcO6M5W+QIBDNOY23TNcyD1IsxM9 tin5wbvulFUqn5PnwgVjSCNe6U1/qkMo7tiICLucMr63kjRrthazkYoyoC/POK6wmulz nMSAaak56NQVjJ+PegyMHAeqXQHqIym/pe5LMrWYhcn/OyhCQ2a7Vu3iAaJSKDOF/F2p Rsew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692629648; x=1693234448; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=1m4RaE6ydVAkfq5tQathmIX+lrXlCmyz18jHgZNKKQY=; b=iLI8pG2703EBnnhHYmDnrSo8wT8ZXyJQZqlxc4ppRIU3zdtFAaM1KM0evEN6lPSV7j 3kg6TxS6tcBqT0TQ6Ooy3+hvjK1bsgnLXN8TXnSVFZZEn/KfxZ8Eif97UIfW/NJQYJ7F C2QDNEtBo9Z4K/mW7fm/PTJT4HJDT/UO+eXoTaLXkosBFurF9jUMgTLlyOTn74HYB4LH gl/d5SHNjmzVWqcsMhWtHhi0jqwqOF2tVgT95YWOG9wVj5+xq4i9zxMh8TT1mkUUm0EL FNPEx2PhAQtSo85iwzkMCyZm5HMwRGvGz63suN5MJgJ/9c1WHSjZlxSj452esh26Jmvo mKMw== X-Gm-Message-State: AOJu0YxZIvC2I67UxHT7fsX1RuV1/0QjAx0IyLwkqcnH2sgbBJ0/VQxR TfNMHpl0beNeC4G+T7LEgQ== X-Google-Smtp-Source: AGHT+IGwcMsZq3QyLINzHNOhNAuWUzP47fCQ77jFcE3ZqHqyZbnOKFVCdtlaiN3k5dvR9/FMtd8GwA== X-Received: by 2002:aa7:d492:0:b0:523:cfa4:5c3d with SMTP id b18-20020aa7d492000000b00523cfa45c3dmr5479978edr.13.1692629648126; Mon, 21 Aug 2023 07:54:08 -0700 (PDT) Received: from p183 ([46.53.250.251]) by smtp.gmail.com with ESMTPSA id w9-20020a056402070900b00525683f9b2fsm6057227edx.5.2023.08.21.07.54.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Aug 2023 07:54:07 -0700 (PDT) Date: Mon, 21 Aug 2023 17:54:05 +0300 From: Alexey Dobriyan To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH] char: shrink character device's devlist[] array Message-ID: MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Merge padding, shrinking "struct memdev" from 32 bytes to 24 bytes on 64-bit. Signed-off-by: Alexey Dobriyan --- drivers/char/mem.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -692,23 +692,23 @@ static const struct file_operations full_fops =3D { =20 static const struct memdev { const char *name; - umode_t mode; const struct file_operations *fops; fmode_t fmode; + umode_t mode; } devlist[] =3D { #ifdef CONFIG_DEVMEM - [DEVMEM_MINOR] =3D { "mem", 0, &mem_fops, FMODE_UNSIGNED_OFFSET }, + [DEVMEM_MINOR] =3D { "mem", &mem_fops, FMODE_UNSIGNED_OFFSET, 0 }, #endif - [3] =3D { "null", 0666, &null_fops, FMODE_NOWAIT }, + [3] =3D { "null", &null_fops, FMODE_NOWAIT, 0666 }, #ifdef CONFIG_DEVPORT - [4] =3D { "port", 0, &port_fops, 0 }, + [4] =3D { "port", &port_fops, 0, 0 }, #endif - [5] =3D { "zero", 0666, &zero_fops, FMODE_NOWAIT }, - [7] =3D { "full", 0666, &full_fops, 0 }, - [8] =3D { "random", 0666, &random_fops, FMODE_NOWAIT }, - [9] =3D { "urandom", 0666, &urandom_fops, FMODE_NOWAIT }, + [5] =3D { "zero", &zero_fops, FMODE_NOWAIT, 0666 }, + [7] =3D { "full", &full_fops, 0, 0666 }, + [8] =3D { "random", &random_fops, FMODE_NOWAIT, 0666 }, + [9] =3D { "urandom", &urandom_fops, FMODE_NOWAIT, 0666 }, #ifdef CONFIG_PRINTK - [11] =3D { "kmsg", 0644, &kmsg_fops, 0 }, + [11] =3D { "kmsg", &kmsg_fops, 0, 0644 }, #endif };