On Sun 04-08-13 05:17:10, Kirill A. Shutemov wrote:
> From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
>
> We're going to add/remove a number of page cache entries at once. This
> patch implements add_bdi_stat() which adjusts bdi stats by arbitrary
> amount. It's required for batched page cache manipulations.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Looks good. You can add:
Reviewed-by: Jan Kara <jack@xxxxxxx>
Honza
> ---
> include/linux/backing-dev.h | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
> index c388155..7060180 100644
> --- a/include/linux/backing-dev.h
> +++ b/include/linux/backing-dev.h
> @@ -166,6 +166,16 @@ static inline void __dec_bdi_stat(struct backing_dev_info *bdi,
> __add_bdi_stat(bdi, item, -1);
> }
>
> +static inline void add_bdi_stat(struct backing_dev_info *bdi,
> + enum bdi_stat_item item, s64 amount)
> +{
> + unsigned long flags;
> +
> + local_irq_save(flags);
> + __add_bdi_stat(bdi, item, amount);
> + local_irq_restore(flags);
> +}
> +
> static inline void dec_bdi_stat(struct backing_dev_info *bdi,
> enum bdi_stat_item item)
> {
> --
> 1.8.3.2
>
--
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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