bcachefs: add capacity, reserved to fs_alloc_debug_to_text()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/alloc_background.c

@@ -2336,6 +2336,7 @@ void bch2_recalc_capacity(struct bch_fs *c)
 
 	reserved_sectors = min(reserved_sectors, capacity);
 
+	c->reserved = reserved_sectors;
 	c->capacity = capacity - reserved_sectors;
 
 	c->bucket_size_max = bucket_size_max;

fs/bcachefs/alloc_foreground.c

@@ -1706,6 +1706,8 @@ void bch2_fs_alloc_debug_to_text(struct printbuf *out, struct bch_fs *c)
 	printbuf_tabstops_reset(out);
 	printbuf_tabstop_push(out, 24);
 
+	prt_printf(out, "capacity\t%llu\n",		c->capacity);
+	prt_printf(out, "reserved\t%llu\n",		c->reserved);
 	percpu_down_read(&c->mark_lock);
 	prt_printf(out, "hidden\t%llu\n",			bch2_fs_usage_read_one(c, &c->usage_base->b.hidden));
 	prt_printf(out, "btree\t%llu\n",			bch2_fs_usage_read_one(c, &c->usage_base->b.btree));

fs/bcachefs/bcachefs.h

@@ -872,6 +872,7 @@ struct bch_fs {
 	struct bch_devs_mask	rw_devs[BCH_DATA_NR];
 
 	u64			capacity; /* sectors */
+	u64			reserved; /* sectors */
 
 	/*
 	 * When capacity _decreases_ (due to a disk being removed), we