Re: [PATCH 02/23] io-controller: Core of the elevator fair queuing

From: Rik van Riel
Date: Fri Aug 28 2009 - 18:27:57 EST


Vivek Goyal wrote:
o This is core of the io scheduler implemented at elevator layer. This is a mix
of cpu CFS scheduler and CFQ IO scheduler. Some of the bits from CFS have
to be derived so that we can support hierarchical scheduling. Without
cgroups or with-in group, we should essentially get same behavior as CFQ.

o This patch only shows non-hierarchical bits. Hierarhical code comes in later
patches.

o This code is the building base of introducing fair queuing logic in common
elevator layer so that it can be used by all the four IO schedulers.

Signed-off-by: Fabio Checconi <fabio@xxxxxxxxxxxxxxxx>
Signed-off-by: Paolo Valente <paolo.valente@xxxxxxxxxx>
Signed-off-by: Nauman Rafique <nauman@xxxxxxxxxx>
Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

--
All rights reversed.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/