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 E9C7ECCF9F8 for ; Sun, 9 Nov 2025 18:07:02 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 55FF78E0012; Sun, 9 Nov 2025 13:07:02 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 537488E0002; Sun, 9 Nov 2025 13:07:02 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 474958E0012; Sun, 9 Nov 2025 13:07:02 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 35F658E0002 for ; Sun, 9 Nov 2025 13:07:02 -0500 (EST) Received: from smtpin12.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id D23858820B for ; Sun, 9 Nov 2025 18:07:01 +0000 (UTC) X-FDA: 84091849842.12.FADA11B Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf02.hostedemail.com (Postfix) with ESMTP id 489378000B for ; Sun, 9 Nov 2025 18:07:00 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=aDkCAdDT; spf=pass (imf02.hostedemail.com: domain of alx@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=alx@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1762711620; 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=RvJPb1oWiSEFrItg9k6KHW7Ej6FEWzRZAf+cqndt6+s=; b=3AjrsHrvMjGXQ5M2CYsQJ+NZxVvaLB0MEjZY6beJubTOMOlwl7Af+m1mj5t7AXjOUZvV9P thcaqvIYDZy+rHL95cdIVDt48+CmuhsrVm0NwFIiOkdTIR46sH4qJ+FrUke/vKBD3m8Zmx CFvx595AYO8GYkxGw6XCuxcI3LBXRvs= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=aDkCAdDT; spf=pass (imf02.hostedemail.com: domain of alx@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=alx@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1762711620; a=rsa-sha256; cv=none; b=gIIa8Hq/6A4AVd+o9+bD6ubLSH1QaSMAT2sPhVX1ai4MkGHBMgWRU92OnAZH35+FW8W1cy mFbcPWjw1FMj5vJAk0aJfvHhdd24S8hq3BWHa2Dg2kkvcYHm+P33v0ZTzKl9ZWZ+yb1YH8 +DjwnxBcbAMDpvOezT2I52FKSeWkKoY= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 8341A60007; Sun, 9 Nov 2025 18:06:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 423E4C4CEFB; Sun, 9 Nov 2025 18:06:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762711619; bh=NCUBtJbYbJUSM0PsF/hMhn60Ld0of4iArhANi0uVhgc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aDkCAdDTBKcWRXGOcI+UXsgw84QaqZW8IzPm/a5rL26dy7qe0gMOs2b6A+v9DgZj2 +DIGa0IqVmPRS/VbYmO4TJJYdIUvsj6jXaQrQ5yBqUR+cIN15YTt73BjpaPdLFmRgc vCkxN7ZDOIWaOzuTDOqZDjpFyoH7hQBXCTHATd8m+SIsmvc0x6wH3gc2CAC2NYPxwf SabU9UBOkBkGKWrKgWjHub/Rdr7mMOcbR4e8SQ1306D4JrbsjjG6JKhkTsnrDhrs8P HGTtJ+zmeAlXnotgcVFov1Ztmv6+6SauSlmGzOAKT2Gt4meJIs6ftUeg0as/tFPkNy SCdW6cr5zTyAQ== Date: Sun, 9 Nov 2025 19:06:54 +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 Subject: [PATCH v3 1/4] array_size.h: Add ARRAY_END() Message-ID: <2cb4ddff93b3d3037ef8d094de94227982117f87.1762711279.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-Rspamd-Queue-Id: 489378000B X-Stat-Signature: 3m75ymsuegdibhjkuht3ihyz8mxys751 X-Rspamd-Server: rspam02 X-Rspam-User: X-HE-Tag: 1762711620-738521 X-HE-Meta: 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 cKG5Bxsh 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 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 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..b5775b8f13de 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 @a + * @a: array + */ +#define ARRAY_END(a) (&(a)[ARRAY_SIZE(a)]) + #endif /* _LINUX_ARRAY_SIZE_H */ -- 2.51.0