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>

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 0f721f6..ac2bd8e 100644 (file)
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -40,6 +40,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
        si->ndirty_dirs = sbi->n_dirty_dirs;
        si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
        si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
+       si->wb_pages = get_pages(sbi, F2FS_WRITEBACK);
        si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
        si->rsvd_segs = reserved_segments(sbi);
        si->overp_segs = overprovision_segments(sbi);
@@ -266,8 +267,8 @@ static int stat_show(struct seq_file *s, void *v)
                seq_printf(s, "\nExtent Hit Ratio: %d / %d\n",
                           si->hit_ext, si->total_ext);
                seq_puts(s, "\nBalancing F2FS Async:\n");
-               seq_printf(s, "  - inmem: %4d\n",
-                          si->inmem_pages);
+               seq_printf(s, "  - inmem: %4d, wb: %4d\n",
+                          si->inmem_pages, si->wb_pages);
                seq_printf(s, "  - nodes: %4d in %4d\n",
                           si->ndirty_node, si->node_pages);
                seq_printf(s, "  - dents: %4d in dirs:%4d\n",

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 8231a59..964c240 100644 (file)
--- 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;