From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 6 Aug 2007 08:57:12 +0200 From: Ingo Molnar Subject: Re: [PATCH 00/23] per device dirty throttling -v8 Message-ID: <20070806065712.GA2818@elte.hu> References: <20070803123712.987126000@chello.nl> <46B4E161.9080100@garzik.org> <20070804224706.617500a0@the-village.bc.nu> <200708050051.40758.ctpm@ist.utl.pt> <20070805014926.400d0608@the-village.bc.nu> <20070805072805.GB4414@elte.hu> <20070805134640.2c7d1140@the-village.bc.nu> <20070805125847.GC22060@elte.hu> <20070805132925.GA4089@1wt.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070805132925.GA4089@1wt.eu> Sender: owner-linux-mm@kvack.org Return-Path: To: Willy Tarreau Cc: Alan Cox , Claudio Martins , Jeff Garzik , =?iso-8859-1?Q?J=F6rn?= Engel , Linus Torvalds , 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: * Willy Tarreau wrote: > In your example above, maybe it's the opposite, users know they can > keep a file in /tmp one more week by simply cat'ing it. sure - and i'm not arguing that noatime should the kernel-wide default. In every single patch i sent it was a .config option (and a boot option _and_ a sysctl option that i think you missed) that a user/distro enables or disabled. But i think the /tmp argument is not very strong: /tmp is fundamentally volatile, and you can grow dependencies on pretty much _any_ aspect of the kernel. So the question isnt "is there impact" (there is, at least for noatime), the question is "is it still worth doing it". > Changing the kernel in a non-easily reversible way is not kind to the > users. none of my patches did any of that... anyway, my latest patch doesnt do noatime, it does the "more intelligent relatime" approach. Ingo -- 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