f2fs: show available_nids in f2fs/status

This patch adds an entry in f2fs/status to show # of available nids.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

2 files changed, 5 insertions, 3 deletions

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 6102737473d4..87f449845f5f 100644
--- a/fs/f2fs/debug.c
+++ b/fs/f2fs/debug.c
@@ -97,6 +97,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
         si->sits = MAIN_SEGS(sbi);
         si->dirty_sits = SIT_I(sbi)->dirty_sentries;
         si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID_LIST];
+        si->avail_nids = NM_I(sbi)->available_nids;
         si->alloc_nids = NM_I(sbi)->nid_cnt[ALLOC_NID_LIST];
         si->bg_gc = sbi->bg_gc;
         si->util_free = (int)(free_user_blocks(sbi) >> sbi->log_blocks_per_seg)
@@ -370,8 +371,8 @@ static int stat_show(struct seq_file *s, void *v)
                            si->ndirty_imeta);
                 seq_printf(s, "  - NATs: %9d/%9d\n  - SITs: %9d/%9d\n",
                            si->dirty_nats, si->nats, si->dirty_sits, si->sits);
-                seq_printf(s, "  - free_nids: %9d, alloc_nids: %9d\n",
-                           si->free_nids, si->alloc_nids);
+                seq_printf(s, "  - free_nids: %9d/%9d\n  - alloc_nids: %9d\n",
+                           si->free_nids, si->avail_nids, si->alloc_nids);
                 seq_puts(s, "\nDistribution of User Blocks:");
                 seq_puts(s, " [ valid | invalid | free ]\n");
                 seq_puts(s, "  [");
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index f0481fb52142..4cb53fb741ad 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2394,7 +2394,8 @@ struct f2fs_stat_info {
         int ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, ndirty_imeta;
         int inmem_pages;
         unsigned int ndirty_dirs, ndirty_files, ndirty_all;
-        int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids;
+        int nats, dirty_nats, sits, dirty_sits;
+        int free_nids, avail_nids, alloc_nids;
         int total_count, utilization;
         int bg_gc, nr_wb_cp_data, nr_wb_data;
         int nr_flushing, nr_flushed, nr_discarding, nr_discarded;