From: Andreas Dilger <adilger@turbolabs.com>
To: snpe <snpe@snpe.co.yu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ext2/ext3 question ?
Date: Thu, 27 Dec 2001 11:00:09 -0700 [thread overview]
Message-ID: <20011227110009.C12868@lynx.no> (raw)
In-Reply-To: <200112272249.fBRMmWm01937@spnew.snpe.co.yu>
In-Reply-To: <200112272249.fBRMmWm01937@spnew.snpe.co.yu>; from snpe@snpe.co.yu on Thu, Dec 27, 2001 at 11:48:31PM +0100
On Dec 27, 2001 23:48 +0100, snpe wrote:
> Hello,
> I set S flag with chattr for any file.
> Is file really async write (without buffer cache) ?
No, see chattr man page: S = synchronous updates. It doesn't say anything
about not using the buffer cache. You need to use O_DIRECT for that.
> Is it same raw devices and if not, what is different ?
Totally unrelated. It means that each I/O is waited on by the kernel
before it returns to user space.
Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/
prev parent reply other threads:[~2001-12-27 18:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-27 22:48 snpe
2001-12-27 18:00 ` Andreas Dilger [this message]
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