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>

diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c
index 6102737473d4ed45348770b3842c9520dd2cc584..87f449845f5f9a8010ee13c40548fb6620802872 100644 (file)
--- 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 f0481fb521424875d0fc8fcb3bafcf638664985d..4cb53fb741ad322c3edcf60a865000af3492d54b 100644 (file)
--- 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;