[Devel] [PATCH 1/2] sched: add wait_for_completion_io[_timeout]

[Ingo Molnar]

* Vladimir Davydov <vdavydov at parallels.com> wrote:

> The only difference between wait_for_completion[_timeout]() and
> wait_for_completion_io[_timeout]() is that the latter calls
> io_schedule_timeout() instead of schedule_timeout() so that the caller
> is accounted as waiting for IO, not just sleeping.
> 
> These functions can be used for correct iowait time accounting when the
> completion struct is actually used for waiting for IO (e.g. completion
> of a bio request in the block layer).
> 
> Signed-off-by: Vladimir Davydov <vdavydov at parallels.com>

Acked-by: Ingo Molnar <mingo at kernel.org>

Thanks,

	Ingo