f2fs: show flush list status in sysfs

This patch adds to show flush list status in sysfs.

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

1 files changed, 4 insertions, 1 deletions

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 87f449845f5f..00c1d4a9f356 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -61,6 +61,8 @@ static void update_general_status(struct f2fs_sb_info *sbi)
                         atomic_read(&SM_I(sbi)->fcc_info->issued_flush);
                 si->nr_flushing =
                         atomic_read(&SM_I(sbi)->fcc_info->issing_flush);
+                si->flush_list_empty =
+                        llist_empty(&SM_I(sbi)->fcc_info->issue_list);
         }
         if (SM_I(sbi) && SM_I(sbi)->dcc_info) {
                 si->nr_discarded =
@@ -349,10 +351,11 @@ static int stat_show(struct seq_file *s, void *v)
                 seq_printf(s, "  - Inner Struct Count: tree: %d(%d), node: %d\n",
                                 si->ext_tree, si->zombie_tree, si->ext_node);
                 seq_puts(s, "\nBalancing F2FS Async:\n");
-                seq_printf(s, "  - IO (CP: %4d, Data: %4d, Flush: (%4d %4d), "
+                seq_printf(s, "  - IO (CP: %4d, Data: %4d, Flush: (%4d %4d %4d), "
                         "Discard: (%4d %4d)) cmd: %4d undiscard:%4u\n",
                            si->nr_wb_cp_data, si->nr_wb_data,
                            si->nr_flushing, si->nr_flushed,
+                           si->flush_list_empty,
                            si->nr_discarding, si->nr_discarded,
                            si->nr_discard_cmd, si->undiscard_blks);
                 seq_printf(s, "  - inmem: %4d, atomic IO: %4d (Max. %4d), "