On Wed 22-11-17 16:15:58, Josef Bacik wrote:
> From: Josef Bacik <jbacik@xxxxxx>
>
> We are converting the writeback counters to use bytes instead of pages,
> so we need to make the batch size for the percpu modifications align
> properly with the new units. Since we used pages before, just multiply
> by PAGE_SIZE to get the equivalent bytes for the batch size.
>
> Signed-off-by: Josef Bacik <jbacik@xxxxxx>
Looks good to me, just please make this part of patch 5/11. Otherwise
bisection may get broken by too large errors in per-cpu counters of IO
completions... Thanks!
Honza
> ---
> lib/flex_proportions.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/flex_proportions.c b/lib/flex_proportions.c
> index 2cc1f94e03a1..b0343ae71f5e 100644
> --- a/lib/flex_proportions.c
> +++ b/lib/flex_proportions.c
> @@ -166,7 +166,7 @@ void fprop_fraction_single(struct fprop_global *p,
> /*
> * ---- PERCPU ----
> */
> -#define PROP_BATCH (8*(1+ilog2(nr_cpu_ids)))
> +#define PROP_BATCH (8*PAGE_SIZE*(1+ilog2(nr_cpu_ids)))
>
> int fprop_local_init_percpu(struct fprop_local_percpu *pl, gfp_t gfp)
> {
> --
> 2.7.5
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
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