f2fs: show the max number of volatile operations

This patch adds to show the max number of volatile operations which are
conducting concurrently.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 8 insertions, 2 deletions

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index ef1179df05d9..0baa3ee39392 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -51,7 +51,9 @@ static void update_general_status(struct f2fs_sb_info *sbi)
         si->ndirty_all = sbi->ndirty_inode[DIRTY_META];
         si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
         si->aw_cnt = atomic_read(&sbi->aw_cnt);
+        si->vw_cnt = atomic_read(&sbi->vw_cnt);
         si->max_aw_cnt = atomic_read(&sbi->max_aw_cnt);
+        si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt);
         si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA);
         si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA);
         if (SM_I(sbi) && SM_I(sbi)->fcc_info)
@@ -337,8 +339,10 @@ static int stat_show(struct seq_file *s, void *v)
                 seq_printf(s, "  - IO (CP: %4d, Data: %4d, Flush: %4d, Discard: %4d)\n",
                            si->nr_wb_cp_data, si->nr_wb_data,
                            si->nr_flush, si->nr_discard);
-                seq_printf(s, "  - inmem: %4d, atomic IO: %4d (Max. %4d)\n",
-                           si->inmem_pages, si->aw_cnt, si->max_aw_cnt);
+                seq_printf(s, "  - inmem: %4d, atomic IO: %4d (Max. %4d), "
+                        "volatile IO: %4d (Max. %4d)\n",
+                           si->inmem_pages, si->aw_cnt, si->max_aw_cnt,
+                           si->vw_cnt, si->max_vw_cnt);
                 seq_printf(s, "  - nodes: %4d in %4d\n",
                            si->ndirty_node, si->node_pages);
                 seq_printf(s, "  - dents: %4d in dirs:%4d (%4d)\n",
@@ -438,7 +442,9 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi)
         atomic_set(&sbi->inplace_count, 0);
 
         atomic_set(&sbi->aw_cnt, 0);
+        atomic_set(&sbi->vw_cnt, 0);
         atomic_set(&sbi->max_aw_cnt, 0);
+        atomic_set(&sbi->max_vw_cnt, 0);
 
         mutex_lock(&f2fs_stat_mutex);
         list_add_tail(&si->stat_list, &f2fs_stat_list);