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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C0F4D41C17 for ; Thu, 11 Dec 2025 10:43:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E999E6B0007; Thu, 11 Dec 2025 05:43:57 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id E4A616B0008; Thu, 11 Dec 2025 05:43:57 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D87466B000A; Thu, 11 Dec 2025 05:43:57 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id C7DEA6B0007 for ; Thu, 11 Dec 2025 05:43:57 -0500 (EST) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 698408B116 for ; Thu, 11 Dec 2025 10:43:57 +0000 (UTC) X-FDA: 84206854914.26.54195B1 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf27.hostedemail.com (Postfix) with ESMTP id B426E4000A for ; Thu, 11 Dec 2025 10:43:55 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=K9zhqO8e; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf27.hostedemail.com: domain of alx@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=alx@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1765449835; a=rsa-sha256; cv=none; b=n4I+jjkbY+2aN1m4CwI6up23+CLDlKTe2z0Pmw4e1XLvVlTRytJASSClsxNxts8S0jo4wZ GHsivIh1ouAUrJf5lY9VXxWECXmhlMUdeT+YIEYv/xjjSkQMZdZG/sMGJ2NISgvN9Ak2nM wF3mA20qx1EjbezwToddlw5D9wwZHow= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=K9zhqO8e; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf27.hostedemail.com: domain of alx@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=alx@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1765449835; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=CNXDhEfUs2p7rqxHrG1BCgqb9DusTf8GED65ME2P2Z0=; b=q2zZHN5MHMwRgheG2O/eTeFQobnlCkLYOjpzc0tpsFrIhsiqE/fmkqfDH5CsL1jp7hCM7S Yxg2paKD2Tr9KNzxV3XeUZ6ool0QDFIm1J6krUXTEiLgNFg8VqXpqdmej6Ql7tB8BHdnZY dP54wBhOKkITSID/NAvZ7hyIdByZNuk= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id CC56C60151; Thu, 11 Dec 2025 10:43:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 978E1C116B1; Thu, 11 Dec 2025 10:43:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765449834; bh=2xVmGhP0PFx/hs6+oME8OSKXBynf/1IS5/aMFkAz6UI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=K9zhqO8ebB/VUKGBrQ1r3WX69JHHTEQgI9B2kxnC+jLmwKWooo/4A1tZV9T7+p3fT zp6P20bxrtxphcno96IgwkJNTcEJCje7itPRtpTyvccmzzGp2ARk5zTomK7iFlye8s 7C23XcNrJNfI0j9O5ZU5eo0X4tA/FKAAqWIHLvclQ8unbHXg9dBo6veu+Nso8/aVxs 698U5ANWF94kPC18hsxXLCsF8OBftDF0MNEGsR+yeBn3R0Yy7ccLtGo/Yt6vGju2R2 A+rs5KtDnTcxGNzvNgSyjwa+/AyQSXuTzYWkjjH70GbYOFR+3B8+wIYA1WgQ0Mc5iC qUBuz7R20S4zg== Date: Thu, 11 Dec 2025 11:43:49 +0100 From: Alejandro Colomar To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Alejandro Colomar , Kees Cook , Christopher Bazley , Rasmus Villemoes , Marco Elver , Michal Hocko , Linus Torvalds , Al Viro , Alexander Potapenko , Dmitry Vyukov , Jann Horn , Andrew Morton , "Maciej W. Rozycki" Subject: [PATCH v6 1/4] array_size.h: Add ARRAY_END() Message-ID: <5973cfb674192bc8e533485dbfb54e3062896be1.1765449750.git.alx@kernel.org> X-Mailer: git-send-email 2.51.0 References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Queue-Id: B426E4000A X-Rspamd-Server: rspam10 X-Stat-Signature: 4aj1heyhco4n4o1o9a1phigib5zikwab X-HE-Tag: 1765449835-437099 X-HE-Meta: U2FsdGVkX1/5OnENzV97pB6TfJ8idHeCPaiFZHAEmag6ciCCbxDd5iEwPGZuu7Ae+z1g7b4ArKEAUv/XuEt+6ki+nmfcP95u5H64qa5Ln1x1XDdZi1EjBqjyxzCG6OKnUOJmRan58uBMhtMeC6+cp/VPaxNSaiSDaf2ufPpX9rH2x63bxkQ9CI/CAoMK3zErs1lNUCnPoVD87OoPh0rjZsF8TT/DyrsJQ0RCMTPxu5jP6GveAyZ2s6JLFv5PSBGS9Zdvvpz2HDM1coKPKmeB/SKTOHjmTpNOONPDe7RaeL4e75fVYnBkzJ3MZ256UJyCS5TtqwLiaaB07BSVo6+BEIVm8+d0ef5XFkWMnIaE9rWQjW9pRmvsK4PnRFnWHVVz+bdRCrFkvMYtfHnJwa59xD5tEboF1eLEGkS/boJk1P7F7A4hs67Wc8g6CZ/gxs9enfgeK1GiTXLc6G8hwK7ESQ+KfNZwuTKfR0BngH2QZkV2P1bawzHQozp8DgaCLkUezUn7+OGhA/ieeojQ8yMLUL9g9mN6T9PVG5sQxSqq767tZ05Kbhxk2BdgC2NK2YZ5HyTO0X3L/gVB535HA4rawgH1XUz7b6SlmRw6J4tCr3qVMCkykVA26oSwq6rhXMZ9quvwu7PLV9LSZJe+ZMSKZDoJN6fpPZbPtsa4VoLE62jnkZudj0oDgCvjbgWgKkOf8eBfUsjEyJsLn5cnMs2QaJ0VrDokUZ2gOmuy72scECZnDlSF1+DDg12WODQqA5Qj/25CsA7VukC0bM5cJwY26HoGVP1pVaUyd2yBV1y1o25PbpvSqLkxU/SsYjR+XXwdqqyD0V0YTACSWPgqAhe4xuiFQhzBnbRay/3YISxp04UjnrZHYiKRRJ3KhSrpJlw5AMHa6hSTqasrzmS0117C58yDRFmhIg+A/2OPOeEzmvyad3TaBuO1QoE+KUMC28ySR9jSq1bpNzVHNNGOijQ QDEQMWwg QiRn4Pmf2Mijg1yAX1F/CG0QJZQNVFeYz2ZxtFArdDTPa+JXLX+xyE05f7nL0a86quDSNa+cJu5SKwdouBi62lavhP86FXRNsoRwAe9Jjb4m13tB6Yijxy58yOl6RfnDp/U7ybQn2pBnTCXwfyjKDFFLOI9EzUuyrYaHGKZuh5lpEt7yfjhjl9xI7z+M751RKuqKIQaGhvFzW6MRnt9cO5fVr93jmqle4mVeCJJmokhhvXuWw6+gQQrZthd4oulECDnDsqeYn/nExxW4yuTQEuIulM4mHFtTbWY/eZLWpdDVODhVAjSJUkOrOUENcJtv1o7sc0fzg+OyHNyNlVrlH7dqVn9CgDsVI+Ti4UtiDH+fYiqOTY+KZAMmG39gYSY9FSn/AmG8z7QH6WuJ77CKo676p706qSoAKfnHM3qsCItH1HRZK06cPxFXuO4EXfDZotI4mUAy/3iyfIy6Bu2xtw9N5WcYb/iigG1ZRFbtElAvpQvYb9RB0YtXn0E9KSOzuI7bgthRKNXCv9R6ivFnClAzku5Lk9dFPPyS4W73wYjVWdIyYMd6xUs13SRCjHE1VApEuiqvSUeK43gqO6G853hC3/svEybqgIGFuotaqnmaureAOqO1SWd1jKGabgfM7PomBvWtyE50Caj4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: ARRAY_END() returns a pointer one past the end of the last element in the array argument. This pointer is useful for iterating over the elements of an array: for (T *p = a, p < ARRAY_END(a); p++) ... Cc: Kees Cook Cc: Christopher Bazley Cc: Rasmus Villemoes Cc: Marco Elver Cc: Michal Hocko Cc: Linus Torvalds Cc: Al Viro Cc: "Maciej W. Rozycki" Signed-off-by: Alejandro Colomar Message-ID: <37b1088dbd01a21d2f9d460aa510726119b3bcb0.1752193588.git.alx@kernel.org> --- drivers/block/floppy.c | 2 -- include/linux/array_size.h | 6 ++++++ 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 5336c3c5ca36..69661840397e 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -4802,8 +4802,6 @@ static void floppy_release_allocated_regions(int fdc, const struct io_region *p) } } -#define ARRAY_END(X) (&((X)[ARRAY_SIZE(X)])) - static int floppy_request_regions(int fdc) { const struct io_region *p; diff --git a/include/linux/array_size.h b/include/linux/array_size.h index 06d7d83196ca..0c4fec98822e 100644 --- a/include/linux/array_size.h +++ b/include/linux/array_size.h @@ -10,4 +10,10 @@ */ #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) +/** + * ARRAY_END - get a pointer to one past the last element in array @arr + * @arr: array + */ +#define ARRAY_END(arr) (&(arr)[ARRAY_SIZE(arr)]) + #endif /* _LINUX_ARRAY_SIZE_H */ -- 2.51.0