From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 22 Oct 2007 10:15:15 +1000 From: David Chinner Subject: Re: [RFC][PATCH] block: Isolate the buffer cache in it's own mappings. Message-ID: <20071022001515.GW995458@sgi.com> References: <200710151028.34407.borntraeger@de.ibm.com> <20071017213216.b2d0c4bd.akpm@linux-foundation.org> <200710211424.46650.nickpiggin@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200710211424.46650.nickpiggin@yahoo.com.au> Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: "Eric W. Biederman" , Andrew Morton , Chris Mason , Christian Borntraeger , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Martin Schwidefsky , Theodore Ts'o , stable@kernel.org List-ID: On Sun, Oct 21, 2007 at 02:24:46PM +1000, Nick Piggin wrote: > On Saturday 20 October 2007 07:27, Eric W. Biederman wrote: > > Currently only > > metadata is more or less in sync with the contents of /dev/hda1. > > It either is or it isn't, right? And it is, isn't it? (at least > for the common filesystems). It is not true for XFS - it's metadata is not in sync with /dev/ at all as all the cached metadata is kept in a different address space to the raw block device. Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group -- 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