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

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/mm/vmstat.c b/mm/vmstat.c
index f45d7245a28..d624d251946 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -600,13 +600,25 @@ static const struct file_operations fragmentation_file_operations = {
         .release        = seq_release,
 };
 
-const struct seq_operations pagetypeinfo_op = {
+static const struct seq_operations pagetypeinfo_op = {
         .start  = frag_start,
         .next   = frag_next,
         .stop   = frag_stop,
         .show   = pagetypeinfo_show,
 };
 
+static int pagetypeinfo_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &pagetypeinfo_op);
+}
+
+static const struct file_operations pagetypeinfo_file_ops = {
+        .open           = pagetypeinfo_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
 #ifdef CONFIG_ZONE_DMA
 #define TEXT_FOR_DMA(xx) xx "_dma",
 #else
@@ -925,6 +937,7 @@ static int __init setup_vmstat(void)
 #endif
 #ifdef CONFIG_PROC_FS
         proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
+        proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
 #endif
         return 0;
 }