linux-kernel - Re: [PATCH 00/23] per device dirty throttling -v8

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1186258425.2777.10.camel@laptopd505.fenrus.org>
Date:	Sat, 04 Aug 2007 13:13:44 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	J?rn Engel <joern@...fs.org>, Jeff Garzik <jeff@...zik.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, linux-mm@...ck.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	miklos@...redi.hu, akpm@...ux-foundation.org, neilb@...e.de,
	dgc@....com, tomoki.sekiyama.qu@...achi.com, nikita@...sterfs.com,
	trond.myklebust@....uio.no, yingchao.zhou@...il.com,
	richard@....demon.co.uk, david@...g.hm
Subject: Re: [PATCH 00/23] per device dirty throttling -v8

On Sat, 2007-08-04 at 22:11 +0200, Ingo Molnar wrote:
> * Ingo Molnar <mingo@...e.hu> 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 from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/