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

Rik van Riel riel at redhat.com
Fri Aug 28 15:26:56 PDT 2009


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 at gandalf.sssup.it>
> Signed-off-by: Paolo Valente <paolo.valente at unimore.it>
> Signed-off-by: Nauman Rafique <nauman at google.com>
> Signed-off-by: Vivek Goyal <vgoyal at redhat.com>

Acked-by: Rik van Riel <riel at redhat.com>

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