[ltp] Fedora on Thinkpads

[Marius Gedminas]

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On Tue, Nov 11, 2003 at 01:37:03PM +0100, Tino Keitel wrote:
> On Mon, Nov 10, 2003 at 04:52:39 -0500, Behdad Esfahbod wrote:
> > On Mon, 10 Nov 2003, Tino Keitel wrote:
> > > Buffered IO is used in nearly every Linux installation per default, so
> > > this is nothing special. Could anybody give some details about the
> > > laptop mode? Or are they just using ext2 and noflushd?
> >=20
> > It's a kernel patch, that schedules write backs to whenever the
> > disk is waking up for read access.  Other wise, you get your hard
> > disk always on, as there are always something to write... (access
> > time, ...)
>=20
> This feature is already present without a patch in the kupdated, and
> this is how noflushd works. But this will only work with ext2, not with
> any of the journaling file systems, since they bypass the kupdated.

The laptop mode patch does more than that.  See
http://kerneltrap.org/node/view/653

AFAIU it also patches ext3 but not reiserfs or other journaling fses.

Marius Gedminas
--=20
F U cn rd dis U mst uz Unix.

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