[PATCH 3/3] mm/vmalloc: extract show_busy_info from vmalloc_info_show

[Ye Liu <ye.liu@linux.dev>]

From: Ye Liu <liuye@kylinos.cn>

Extract the busy vmap area iteration into show_busy_info, mirroring
the existing show_purge_info pattern.

Signed-off-by: Ye Liu <liuye@kylinos.cn>
---
 mm/vmalloc.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 797933ba9451..7638845377f5 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -5345,12 +5345,12 @@ static void show_purge_info(struct seq_file *m)
 	}
 }
 
-static int vmalloc_info_show(struct seq_file *m, void *p)
+static void show_busy_info(struct seq_file *m)
 {
 	struct vmap_node *vn;
 	struct vmap_area *va;
 	struct vm_struct *v;
-	unsigned int *counters;
+	unsigned int *counters = NULL;
 
 	if (IS_ENABLED(CONFIG_NUMA))
 		counters = kmalloc_array(nr_node_ids, sizeof(unsigned int), GFP_KERNEL);
@@ -5415,12 +5415,18 @@ static int vmalloc_info_show(struct seq_file *m, void *p)
 		spin_unlock(&vn->busy.lock);
 	}
 
+	if (IS_ENABLED(CONFIG_NUMA))
+		kfree(counters);
+}
+
+static int vmalloc_info_show(struct seq_file *m, void *p)
+{
+	show_busy_info(m);
+
 	/*
 	 * As a final step, dump "unpurged" areas.
 	 */
 	show_purge_info(m);
-	if (IS_ENABLED(CONFIG_NUMA))
-		kfree(counters);
 	return 0;
 }
 

-- 
2.25.1