From patchwork Fri Feb 26 01:21:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12105517 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 52A77C433E6 for ; Fri, 26 Feb 2021 01:21:07 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C8BA264F34 for ; Fri, 26 Feb 2021 01:21:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C8BA264F34 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 5F5A26B00DF; Thu, 25 Feb 2021 20:21:06 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 57D586B00E0; Thu, 25 Feb 2021 20:21:06 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4935D6B00E1; Thu, 25 Feb 2021 20:21:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0097.hostedemail.com [216.40.44.97]) by kanga.kvack.org (Postfix) with ESMTP id 2F44F6B00DF for ; Thu, 25 Feb 2021 20:21:06 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 01C2018425A95 for ; Fri, 26 Feb 2021 01:21:06 +0000 (UTC) X-FDA: 77858665332.17.CDBDD32 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf23.hostedemail.com (Postfix) with ESMTP id 44EDBA0009F0 for ; Fri, 26 Feb 2021 01:21:05 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 2C92B64F3C; Fri, 26 Feb 2021 01:21:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614302464; bh=l1n256VGACAvnIN1lwNELVlMM6rCPZVqR8xukU1Rs2w=; h=Date:From:To:Subject:In-Reply-To:From; b=DqsQ/ABOE6qdcbJ3JF8xE/KSuRwnIo1BDzo2IbHLRnTQWpnFm5X+AXbnVB+jRZl23 qCAETiH4M2pXMG6fBO9yPjFYV0KWfo3d2p13mTEJD51n6qOUMJDV/AH6RP52/Mx1rG A6wH+tr2NdqEWxeKQ8j/3+qmo7Ruaz6q1vbLlc68= Date: Thu, 25 Feb 2021 17:21:03 -0800 From: Andrew Morton To: akpm@linux-foundation.org, hubert.jasudowicz@gmail.com, linux-mm@kvack.org, mikelley@microsoft.com, mm-commits@vger.kernel.org, mortonm@chromium.org, peterz@infradead.org, thomascedeno@google.com, torvalds@linux-foundation.org, xiang@kernel.org Subject: [patch 088/118] groups: use flexible-array member in struct group_info Message-ID: <20210226012103.WcPCc2XlT%akpm@linux-foundation.org> In-Reply-To: <20210225171452.713967e96554bb6a53e44a19@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Stat-Signature: in5iht4e87gjwboot5mjj7f1mw6resms X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 44EDBA0009F0 Received-SPF: none (linux-foundation.org>: No applicable sender policy available) receiver=imf23; identity=mailfrom; envelope-from=""; helo=mail.kernel.org; client-ip=198.145.29.99 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614302465-808380 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: From: Hubert Jasudowicz Subject: groups: use flexible-array member in struct group_info Replace zero-size array with flexible array member, as recommended by the docs. Link: https://lkml.kernel.org/r/155995eed35c3c1bdcc56e69d8997c8e4c46740a.1611620846.git.hubert.jasudowicz@gmail.com Signed-off-by: Hubert Jasudowicz Cc: "Peter Zijlstra (Intel)" Cc: Micah Morton Cc: Gao Xiang Cc: Michael Kelley Cc: Thomas Cedeno Signed-off-by: Andrew Morton --- include/linux/cred.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/cred.h~groups-use-flexible-array-member-in-struct-group_info +++ a/include/linux/cred.h @@ -25,7 +25,7 @@ struct inode; struct group_info { atomic_t usage; int ngroups; - kgid_t gid[0]; + kgid_t gid[]; } __randomize_layout; /**