[PATCH 2/3] xfs: improve xfs_zoned_show_stats()

[Damien Le Moal <dlemoal@kernel.org>]

Improve the information displayed by /proc/self/mountstats by adding the
total number of zones (RT groups) together with the number of free
zones, and by also showing the number of open zones and the maximum
number of open zones before listing the open zones.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
 fs/xfs/xfs_zone_info.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_zone_info.c b/fs/xfs/xfs_zone_info.c
index 53eabbc3334c..85613799edde 100644
--- a/fs/xfs/xfs_zone_info.c
+++ b/fs/xfs/xfs_zone_info.c
@@ -89,10 +89,12 @@ xfs_zoned_show_stats(
 		!list_empty_careful(&zi->zi_reclaim_reservations));
 	seq_printf(m, "\tRT GC required: %d\n",
 		xfs_zoned_need_gc(mp));
+	seq_printf(m, "\tfree zones: %d / %u\n",
+		   atomic_read(&zi->zi_nr_free_zones), mp->m_sb.sb_rgcount);
 
-	seq_printf(m, "\tfree zones: %d\n", atomic_read(&zi->zi_nr_free_zones));
-	seq_puts(m, "\topen zones:\n");
 	spin_lock(&zi->zi_open_zones_lock);
+	seq_printf(m, "\topen zones: %u / %u\n",
+		   zi->zi_nr_open_zones, mp->m_max_open_zones);
 	list_for_each_entry(oz, &zi->zi_open_zones, oz_entry)
 		xfs_show_open_zone(m, oz);
 	if (zi->zi_open_gc_zone) {
-- 
2.53.0