f2fs: show the number of writeback pages in stat

This patch adds the # of writeback pages in stat info.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 8231a599a305..964c240c287f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1549,7 +1549,7 @@ struct f2fs_stat_info {
         int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
         int nats, dirty_nats, sits, dirty_sits, fnids;
         int total_count, utilization;
-        int bg_gc, inline_inode, inline_dir, inmem_pages;
+        int bg_gc, inline_inode, inline_dir, inmem_pages, wb_pages;
         unsigned int valid_count, valid_node_count, valid_inode_count;
         unsigned int bimodal, avg_vblocks;
         int util_free, util_valid, util_invalid;