f2fs: show counts of checkpoint in status

This patch shows the counts of checkpoint in f2fs' status.

Signed-off-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

3 files changed, 5 insertions, 1 deletions

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index deb60356f7cf..757b77b7118e 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -914,6 +914,7 @@ void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
         unblock_operations(sbi);
         mutex_unlock(&sbi->cp_mutex);
 
+        stat_inc_cp_count(sbi->stat_info);
         trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint");
 }
 
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 3de9d20d0c14..46a12e46179a 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -236,6 +236,7 @@ static int stat_show(struct seq_file *s, void *v)
                            si->dirty_count);
                 seq_printf(s, "  - Prefree: %d\n  - Free: %d (%d)\n\n",
                            si->prefree_count, si->free_segs, si->free_secs);
+                seq_printf(s, "CP calls: %d\n", si->cp_count);
                 seq_printf(s, "GC calls: %d (BG: %d)\n",
                            si->call_count, si->bg_gc);
                 seq_printf(s, "  - data segments : %d\n", si->data_segs);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 817eccced9fe..91f4c5e7b6a2 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1255,7 +1255,7 @@ struct f2fs_stat_info {
         int util_free, util_valid, util_invalid;
         int rsvd_segs, overp_segs;
         int dirty_count, node_pages, meta_pages;
-        int prefree_count, call_count;
+        int prefree_count, call_count, cp_count;
         int tot_segs, node_segs, data_segs, free_segs, free_secs;
         int tot_blks, data_blks, node_blks;
         int curseg[NR_CURSEG_TYPE];
@@ -1272,6 +1272,7 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
         return (struct f2fs_stat_info *)sbi->stat_info;
 }
 
+#define stat_inc_cp_count(si)           ((si)->cp_count++)
 #define stat_inc_call_count(si)         ((si)->call_count++)
 #define stat_inc_bggc_count(sbi)        ((sbi)->bg_gc++)
 #define stat_inc_dirty_dir(sbi)         ((sbi)->n_dirty_dirs++)
@@ -1326,6 +1327,7 @@ void f2fs_destroy_stats(struct f2fs_sb_info *);
 void __init f2fs_create_root_stats(void);
 void f2fs_destroy_root_stats(void);
 #else
+#define stat_inc_cp_count(si)
 #define stat_inc_call_count(si)
 #define stat_inc_bggc_count(si)
 #define stat_inc_dirty_dir(sbi)