From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jake" Subject: RE: Question on character device Date: Thu, 28 Aug 2003 16:18:02 +0200 Sender: linux-newbie-owner@vger.kernel.org Message-ID: <005601c36d6f$31948400$f400a8c0@Mary> References: <36993D449C7FA647BF43568E0793AB3E061DB8@nevis_pune_xchg.pune.nevisnetworks.com> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <36993D449C7FA647BF43568E0793AB3E061DB8@nevis_pune_xchg.pune.nevisnetworks.com> List-Id: Content-Type: text/plain; charset="iso-8859-1" To: 'Girish Kale' Cc: 'linux-newbie' > When I want to write to a character device driver from the=20 > user space, is there any limitation on the size of data that=20 > can be transferred. I want to write approx 64M of data to the=20 > character device driver from the user space. I=B4m not absolutely sure, but I believe there are no limitations on ho= w much data can be sent to a character device. If you store all the data, the only limit will be your memory. If you write more data than there i= s free memory, you=B4re system will start swapping, get really sloppy and will eventually die. Jake - To unsubscribe from this list: send the line "unsubscribe linux-newbie"= in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs