Hi Rajat...
On Tue, Aug 9, 2011 at 09:30, Rajat Sharma <fs.rajat@xxxxxxxxx> wrote:
> of course I looked at the source (obvious first step) before asking
> question and further following tsk->in_iowait, it seems it is just
> needed for accounting purpose.
>
> if (tsk->in_iowait) {
> se->statistics.iowait_sum += delta;
> se->statistics.iowait_count++;
> trace_sched_stat_iowait(tsk, delta);
> }
>
> Wanted to be sure of "is that it all about"? or I am missing something here?
I got a feeling that the main show is:
blk_flush_plug(current);
that name somehow indicates it is "forcing" read/write to happen,
either real soon or at the earliest moment possible...
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
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