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Subject: Re: How to bypass buffer caches?
From: Bruno Diniz de Paula <diniz@cs.rutgers.edu>
To: Valdis.Kletnieks@vt.edu
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <200302131737.h1DHbIFT007308@turing-police.cc.vt.edu>
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But what if "/dev/hda7" already has an ext2 fs set up. How am I supposed
to know which phisical blocks in the disk correspond to each of my files
in the ext2 mapping, that is, "/var/somefile" or "/usr/local/otherfile"?

Thanks,
Bruno.

On Thu, 2003-02-13 at 12:37, Valdis.Kletnieks@vt.edu wrote:
> On Thu, 13 Feb 2003 12:29:12 EST, Bruno Diniz de Paula <diniz@cs.rutgers.=
edu>  said:
>=20
> > the kernel. One option would be create a raw device on top of my disk
> > partition, but in this case I would have to learn how to map a logical
> > file name (/var/tmp/myfile) to a set of block disks. Is there any other
>=20
> What's wrong with this?
>=20
>      fd =3D open("/dev/hda7", your_flags_here);
--=20
Bruno Diniz de Paula <diniz@cs.rutgers.edu>
Rutgers University

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