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SubjectRe: [PATCH 2/5] sched: always use blk_schedule_flush_plug in io_schedule_out
Date
Shaohua Li <shli@fb.com> writes:

> V2: don't change ->in_iowait
>
> Cc: NeilBrown <neilb@suse.de>
> Signed-off-by: Shaohua Li <shli@fb.com>
> ---
> kernel/sched/core.c | 5 +----
> 1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index f9123a8..1ab3d2d 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -4402,10 +4402,7 @@ long __sched io_schedule_timeout(long timeout)
> long ret;
>
> current->in_iowait = 1;
> - if (old_iowait)
> - blk_schedule_flush_plug(current);
> - else
> - blk_flush_plug(current);
> + blk_schedule_flush_plug(current);
>
> delayacct_blkio_start();
> rq = raw_rq();

Looks good to me.

Reviewed-by: Jeff Moyer <jmoyer@redhat.com>


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