From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f43.google.com (mail-pa0-f43.google.com [209.85.220.43]) by kanga.kvack.org (Postfix) with ESMTP id 244156B025E for ; Mon, 30 Nov 2015 11:20:20 -0500 (EST) Received: by pacej9 with SMTP id ej9so189120757pac.2 for ; Mon, 30 Nov 2015 08:20:19 -0800 (PST) Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id qp8si10311048pac.135.2015.11.30.08.20.19 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 30 Nov 2015 08:20:19 -0800 (PST) Date: Mon, 30 Nov 2015 17:20:00 +0100 From: Peter Zijlstra Subject: Re: WARNING in handle_mm_fault Message-ID: <20151130162000.GM17308@twins.programming.kicks-ass.net> References: <201511260027.CCC26590.SOHFMQLVJOtFOF@I-love.SAKURA.ne.jp> <20151125173730.GS27283@dhcp22.suse.cz> <201511262033.EAB48965.FVJOOOMLFHStFQ@I-love.SAKURA.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201511262033.EAB48965.FVJOOOMLFHStFQ@I-love.SAKURA.ne.jp> Sender: owner-linux-mm@kvack.org List-ID: To: Tetsuo Handa Cc: dvyukov@google.com, syzkaller@googlegroups.com, hannes@cmpxchg.org, cgroups@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, kcc@google.com, glider@google.com, sasha.levin@oracle.com, edumazet@google.com, gthelen@google.com, tj@kernel.org On Thu, Nov 26, 2015 at 08:33:05PM +0900, Tetsuo Handa wrote: > By the way, does use of "unsigned char" than "unsigned" save some bytes? There are architectures that cannot do independent byte writes. Best leave it a machine word unless there's a real pressing reason otherwise. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org