[PATCH 5/6] writeback: rename nr_reclaimable to nr_dirty in balance_dirty_pages

[Kemeng Shi <shikemeng@huaweicloud.com>]

Commit 8d92890bd6b85 ("mm/writeback: discard NR_UNSTABLE_NFS, use
NR_WRITEBACK instead") removed NR_UNSTABLE_NFS and nr_reclaimable
only contains dirty page now.
Rename nr_reclaimable to nr_dirty properly.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
---
 mm/page-writeback.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index ba1b6b5ae5d6..481b6bf34c21 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1695,7 +1695,7 @@ static int balance_dirty_pages(struct bdi_writeback *wb,
 	struct dirty_throttle_control * const mdtc = mdtc_valid(&mdtc_stor) ?
 						     &mdtc_stor : NULL;
 	struct dirty_throttle_control *sdtc;
-	unsigned long nr_reclaimable;	/* = file_dirty */
+	unsigned long nr_dirty;
 	long period;
 	long pause;
 	long max_pause;
@@ -1716,9 +1716,9 @@ static int balance_dirty_pages(struct bdi_writeback *wb,
 		unsigned long m_thresh = 0;
 		unsigned long m_bg_thresh = 0;
 
-		nr_reclaimable = global_node_page_state(NR_FILE_DIRTY);
+		nr_dirty = global_node_page_state(NR_FILE_DIRTY);
 		gdtc->avail = global_dirtyable_memory();
-		gdtc->dirty = nr_reclaimable + global_node_page_state(NR_WRITEBACK);
+		gdtc->dirty = nr_dirty + global_node_page_state(NR_WRITEBACK);
 
 		domain_dirty_limits(gdtc);
 
@@ -1769,7 +1769,7 @@ static int balance_dirty_pages(struct bdi_writeback *wb,
 		 * In normal mode, we start background writeout at the lower
 		 * background_thresh, to keep the amount of dirty memory low.
 		 */
-		if (!laptop_mode && nr_reclaimable > gdtc->bg_thresh &&
+		if (!laptop_mode && nr_dirty > gdtc->bg_thresh &&
 		    !writeback_in_progress(wb))
 			wb_start_background_writeback(wb);
 
-- 
2.30.0