From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH 00/23] per device dirty throttling -v8 From: Arjan van de Ven In-Reply-To: <20070804201142.GA2545@elte.hu> References: <20070804103347.GA1956@elte.hu> <20070804163733.GA31001@elte.hu> <46B4C0A8.1000902@garzik.org> <20070804191205.GA24723@lazybastard.org> <20070804192130.GA25346@elte.hu> <20070804192615.GA25600@lazybastard.org> <20070804200038.GA31017@elte.hu> <20070804201142.GA2545@elte.hu> Content-Type: text/plain Date: Sat, 04 Aug 2007 13:13:44 -0700 Message-Id: <1186258425.2777.10.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Ingo Molnar Cc: Linus Torvalds , J?rn Engel , 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 Sat, 2007-08-04 at 22:11 +0200, Ingo Molnar wrote: > * Ingo Molnar wrote: > > > +#ifdef CONFIG_FASTATIME > > + if (!(flags & (MNT_NOATIME | MNT_NODIRATIME))) > > + mnt_flags |= MNT_RELATIME; > > +#endif > > btw., "relatime" does not seem to make much of a difference, if i do > this: > > ls -l x ; sync > > on a "relatime" mounted filesystem ('x' is a regular file), then there's > disk IO for every such command. Only if i mount it noatime,nodiratime do > i get zero disk IO. Or my patch is wrong somehow. do we have reldiratime ? -- 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