Add helper APIs needed by filesystems to avoid poking into writeback
internals.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
---
 include/linux/backing-dev.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 0c8342747cab..4165ad3ddf00 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -78,6 +78,17 @@ static inline s64 wb_stat_sum(struct bdi_writeback *wb, enum wb_stat_item item)
 
 extern void wb_writeout_inc(struct bdi_writeback *wb);
 
+static inline int bdi_wb_dirty_exceeded(struct backing_dev_info *bdi)
+{
+	return bdi->wb.dirty_exceeded;
+}
+
+static inline void bdi_wb_stat_mod(struct backing_dev_info *bdi,
+				   enum wb_stat_item item, s64 amount)
+{
+	wb_stat_mod(&bdi->wb, item, amount);
+}
+
 /*
  * maximal error of a stat counter.
  */
-- 
2.25.1

On Wed 11-02-26 12:30:54, Kundan Kumar wrote:
> Add helper APIs needed by filesystems to avoid poking into writeback
> internals.
> 
> Suggested-by: Christoph Hellwig <hch@lst.de>
> Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
> Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>

Looks sensible. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  include/linux/backing-dev.h | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
> index 0c8342747cab..4165ad3ddf00 100644
> --- a/include/linux/backing-dev.h
> +++ b/include/linux/backing-dev.h
> @@ -78,6 +78,17 @@ static inline s64 wb_stat_sum(struct bdi_writeback *wb, enum wb_stat_item item)
>  
>  extern void wb_writeout_inc(struct bdi_writeback *wb);
>  
> +static inline int bdi_wb_dirty_exceeded(struct backing_dev_info *bdi)
> +{
> +	return bdi->wb.dirty_exceeded;
> +}
> +
> +static inline void bdi_wb_stat_mod(struct backing_dev_info *bdi,
> +				   enum wb_stat_item item, s64 amount)
> +{
> +	wb_stat_mod(&bdi->wb, item, amount);
> +}
> +
>  /*
>   * maximal error of a stat counter.
>   */
> -- 
> 2.25.1
> 
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR