From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 5 Aug 2007 21:34:13 +0100 From: Christoph Hellwig Subject: Re: [PATCH 00/23] per device dirty throttling -v8 Message-ID: <20070805203413.GA25107@infradead.org> References: <20070804163733.GA31001@elte.hu> <46B4C0A8.1000902@garzik.org> <20070804191205.GA24723@lazybastard.org> <20070804192130.GA25346@elte.hu> <20070804192615.GA25600@lazybastard.org> <1186258399.2777.8.camel@laptopd505.fenrus.org> <20070804214821.GC11150@thunk.org> <1186336878.2777.15.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1186336878.2777.15.camel@laptopd505.fenrus.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Arjan van de Ven Cc: Theodore Tso , Linus Torvalds , J?rn Engel , Ingo Molnar , Jeff Garzik , Peter Zijlstra , linux-mm@kvack.org, Linux Kernel Mailing List , miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de, dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com, nikita@clusterfs.com, trond.myklebust@fys.uio.no, yingchao.zhou@gmail.com, richard@rsk.demon.co.uk, david@lang.hm List-ID: On Sun, Aug 05, 2007 at 11:01:18AM -0700, Arjan van de Ven wrote: > > on the journalling side this would be one transaction (not 5 milion) > and... since inodes are grouped on disk, you can even get some better > coalescing this way... > > Wonder if we could do inode-grouping smartly; eg if we HAVE to write > inode X, also write out the atime-dirty inodes in range X-Y to X+Y > (where Y is some tunable) in the same IO.. We already have filesystems in the tree that do such advances things as inode writeback clustering for more than ten years :) -- 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