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SubjectRe: [PATCH 13/23] io-controller: Separate out queue and data
Vivek Goyal wrote:
> o So far noop, deadline and AS had one common structure called *_data which
> contained both the queue information where requests are queued and also
> common data used for scheduling. This patch breaks down this common
> structure in two parts, *_queue and *_data. This is along the lines of
> cfq where all the reuquests are queued in queue and common data and tunables
> are part of data.
> o It does not change the functionality but this re-organization helps once
> noop, deadline and AS are changed to use hierarchical fair queuing.
> o looks like queue_empty function is not required and we can check for
> q->nr_sorted in elevator layer to see if ioscheduler queues are empty or
> not.
> Signed-off-by: Nauman Rafique <>
> Signed-off-by: Gui Jianfeng <>
> Signed-off-by: Vivek Goyal <>

Acked-by: Rik van Riel <>

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