proc: move /proc/vmstat boilerplate to mm/vmstat.c

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Christoph Lameter <cl@linux-foundation.org>

1 files changed, 13 insertions, 1 deletions

diff --git a/mm/vmstat.c b/mm/vmstat.c
index d624d251946..7e1854b8186 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -858,13 +858,24 @@ static void vmstat_stop(struct seq_file *m, void *arg)
         m->private = NULL;
 }
 
-const struct seq_operations vmstat_op = {
+static const struct seq_operations vmstat_op = {
         .start  = vmstat_start,
         .next   = vmstat_next,
         .stop   = vmstat_stop,
         .show   = vmstat_show,
 };
 
+static int vmstat_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &vmstat_op);
+}
+
+static const struct file_operations proc_vmstat_file_operations = {
+        .open           = vmstat_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
 #endif /* CONFIG_PROC_FS */
 
 #ifdef CONFIG_SMP
@@ -938,6 +949,7 @@ static int __init setup_vmstat(void)
 #ifdef CONFIG_PROC_FS
         proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
         proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
+        proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
 #endif
         return 0;
 }