From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id A88116B024C for ; Tue, 15 Jun 2010 13:44:11 -0400 (EDT) Date: Tue, 15 Jun 2010 13:43:53 -0400 From: Christoph Hellwig Subject: Re: [RFC PATCH 0/6] Do not call ->writepage[s] from direct reclaim and use a_ops->writepages() where possible Message-ID: <20100615174353.GA14429@infradead.org> References: <1275987745-21708-1-git-send-email-mel@csn.ul.ie> <20100615140011.GD28052@random.random> <20100615141122.GA27893@infradead.org> <20100615142219.GE28052@random.random> <20100615144342.GA3339@infradead.org> <20100615150850.GF28052@random.random> <20100615153838.GO26788@csn.ul.ie> <20100615161419.GH28052@random.random> <20100615163044.GR26788@csn.ul.ie> <20100615163747.GK28052@random.random> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100615163747.GK28052@random.random> Sender: owner-linux-mm@kvack.org To: Andrea Arcangeli Cc: Mel Gorman , Christoph Hellwig , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Dave Chinner , Chris Mason , Nick Piggin , Rik van Riel List-ID: On Tue, Jun 15, 2010 at 06:37:47PM +0200, Andrea Arcangeli wrote: > It'd be interesting to verify that things don't fall apart with > current xfs if you swapon ./file_on_xfs instead of /dev/something. I can give it a try, but I don't see why it would make any difference. Swap files bypass the filesystem completely during the I/O phase as the swap code builts an extent map during swapon and then submits bios by itself. That also means no allocator calls or other forms of metadata updates. -- 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