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

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

1 files changed, 14 insertions, 1 deletions

diff --git a/mm/vmstat.c b/mm/vmstat.c
index 7e1854b81868..c3ccfda23adc 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -795,7 +795,7 @@ static int zoneinfo_show(struct seq_file *m, void *arg)
         return 0;
 }
 
-const struct seq_operations zoneinfo_op = {
+static const struct seq_operations zoneinfo_op = {
         .start  = frag_start, /* iterate over all zones. The same as in
                                * fragmentation. */
         .next   = frag_next,
@@ -803,6 +803,18 @@ const struct seq_operations zoneinfo_op = {
         .show   = zoneinfo_show,
 };
 
+static int zoneinfo_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &zoneinfo_op);
+}
+
+static const struct file_operations proc_zoneinfo_file_operations = {
+        .open           = zoneinfo_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
 static void *vmstat_start(struct seq_file *m, loff_t *pos)
 {
         unsigned long *v;
@@ -950,6 +962,7 @@ static int __init setup_vmstat(void)
         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);
+        proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
 #endif
         return 0;
 }