From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Halcrow Subject: Re: [PATCH 0/12: eCryptfs] eCryptfs version 0.1.6 Date: Thu, 4 May 2006 07:08:33 -0500 Message-ID: <20060504120833.GA9194@halcrow.us> References: <20060504031755.GA28257@hellewell.homeip.net> <20060504072849.GC5359@ucw.cz> Reply-To: Michael Halcrow Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Phillip Hellewell , Andrew Morton , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, viro@ftp.linux.org.uk, mhalcrow@us.ibm.com, mcthomps@us.ibm.com, toml@us.ibm.com, yoder1@us.ibm.com, James Morris , "Stephen C. Tweedie" , Erez Zadok , David Howells Return-path: Received: from ylpvm01-ext.prodigy.net ([207.115.57.32]:51394 "EHLO ylpvm01.prodigy.net") by vger.kernel.org with ESMTP id S1750959AbWEDMNl (ORCPT ); Thu, 4 May 2006 08:13:41 -0400 Received: from pimout7-ext.prodigy.net (pimout7-int.prodigy.net [207.115.4.147]) by ylpvm01.prodigy.net (8.12.10 outbound/8.12.10) with ESMTP id k44CDYG4011893 for ; Thu, 4 May 2006 08:13:36 -0400 To: Pavel Machek Content-Disposition: inline In-Reply-To: <20060504072849.GC5359@ucw.cz> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Thu, May 04, 2006 at 07:28:49AM +0000, Pavel Machek wrote: > > processing the 4096-byte extents. The second modification is that > > the header region occupies either 8192 bytes or the page size of > > the host on which the file is created, whichever is larger. This > > maximizes the probability that pages will be aligned between the > > unencrypted and encrypted data, which is not a requirement, but it > > helps with performance. > > Does that mean that 10-bytes file now occupies 12KB disk space in > common case of 4K filesystem? Yes. Mike