From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-f197.google.com (mail-qt0-f197.google.com [209.85.216.197]) by kanga.kvack.org (Postfix) with ESMTP id B32D96B0033 for ; Mon, 23 Jan 2017 01:26:26 -0500 (EST) Received: by mail-qt0-f197.google.com with SMTP id x49so95196822qtc.7 for ; Sun, 22 Jan 2017 22:26:26 -0800 (PST) Received: from bombadil.infradead.org (bombadil.infradead.org. [65.50.211.133]) by mx.google.com with ESMTPS id 18si10140889qkm.20.2017.01.22.22.26.26 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 22 Jan 2017 22:26:26 -0800 (PST) Date: Sun, 22 Jan 2017 22:26:21 -0800 From: Matthew Wilcox Subject: Re: [PATCH] mm: extend zero pages to same element pages for zram Message-ID: <20170123062621.GB12833@bombadil.infradead.org> References: <1483692145-75357-1-git-send-email-zhouxianrong@huawei.com> <1484296195-99771-1-git-send-email-zhouxianrong@huawei.com> <20170121084338.GA405@jagdpanzerIV.localdomain> <84073d07-6939-b22d-8bda-4fa2a9127555@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <84073d07-6939-b22d-8bda-4fa2a9127555@huawei.com> Sender: owner-linux-mm@kvack.org List-ID: To: zhouxianrong Cc: Sergey Senozhatsky , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, sergey.senozhatsky@gmail.com, minchan@kernel.org, ngupta@vflare.org, Mi.Sophia.Wang@huawei.com, zhouxiyu@huawei.com, weidu.du@huawei.com, zhangshiming5@huawei.com, won.ho.park@huawei.com On Sun, Jan 22, 2017 at 10:58:38AM +0800, zhouxianrong wrote: > 1. memset is just set a int value but i want to set a long value. memset doesn't set an int value. DESCRIPTION The memset() function fills the first n bytes of the memory area pointed to by s with the constant byte c. It sets a byte value. K&R just happened to choose 'int' as the type to store that "unsigned char" in. Probably for very good reasons which make absolutely no sense today. -- 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