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Commit af6a3113 authored by Wu Fengguang's avatar Wu Fengguang
Browse files

writeback: add bg_threshold parameter to __bdi_update_bandwidth() 



No behavior change.

Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
parent 6c14ae1e

fs/fs-writeback.c

+1 −1
Original line number Diff line number Diff line
@@ -675,7 +675,7 @@ static inline bool over_bground_thresh(void) 
static void wb_update_bandwidth(struct bdi_writeback *wb,

				unsigned long start_time)

{

	__bdi_update_bandwidth(wb->bdi, 0, 0, 0, 0, start_time);

	__bdi_update_bandwidth(wb->bdi, 0, 0, 0, 0, 0, start_time);

}



/*

include/linux/writeback.h

+1 −0
Original line number Diff line number Diff line
@@ -143,6 +143,7 @@ unsigned long bdi_dirty_limit(struct backing_dev_info *bdi, 


void __bdi_update_bandwidth(struct backing_dev_info *bdi,

			    unsigned long thresh,

			    unsigned long bg_thresh,

			    unsigned long dirty,

			    unsigned long bdi_thresh,

			    unsigned long bdi_dirty,

mm/page-writeback.c

+7 −4
Original line number Diff line number Diff line
@@ -779,6 +779,7 @@ static void global_update_bandwidth(unsigned long thresh, 


void __bdi_update_bandwidth(struct backing_dev_info *bdi,

			    unsigned long thresh,

			    unsigned long bg_thresh,

			    unsigned long dirty,

			    unsigned long bdi_thresh,

			    unsigned long bdi_dirty,
@@ -815,6 +816,7 @@ void __bdi_update_bandwidth(struct backing_dev_info *bdi, 


static void bdi_update_bandwidth(struct backing_dev_info *bdi,

				 unsigned long thresh,

				 unsigned long bg_thresh,

				 unsigned long dirty,

				 unsigned long bdi_thresh,

				 unsigned long bdi_dirty,
@@ -823,8 +825,8 @@ static void bdi_update_bandwidth(struct backing_dev_info *bdi, 
	if (time_is_after_eq_jiffies(bdi->bw_time_stamp + BANDWIDTH_INTERVAL))

		return;

	spin_lock(&bdi->wb.list_lock);

	__bdi_update_bandwidth(bdi, thresh, dirty, bdi_thresh, bdi_dirty,

			       start_time);

	__bdi_update_bandwidth(bdi, thresh, bg_thresh, dirty,

			       bdi_thresh, bdi_dirty, start_time);

	spin_unlock(&bdi->wb.list_lock);

}
@@ -912,8 +914,9 @@ static void balance_dirty_pages(struct address_space *mapping, 
		if (!bdi->dirty_exceeded)

			bdi->dirty_exceeded = 1;



		bdi_update_bandwidth(bdi, dirty_thresh, nr_dirty,

				     bdi_thresh, bdi_dirty, start_time);

		bdi_update_bandwidth(bdi, dirty_thresh, background_thresh,

				     nr_dirty, bdi_thresh, bdi_dirty,

				     start_time);



		/* Note: nr_reclaimable denotes nr_dirty + nr_unstable.

		 * Unstable writes are a feature of certain networked