proc: introduce proc_create_single{,_data}

Variants of proc_create{,_data} that directly take a seq_file show
callback and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 2 insertions, 19 deletions

diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index a627a5db2125..d3e3f0f2ec1c 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -87,22 +87,6 @@ static const struct file_operations vlan_fops = {
 };
 
 /*
- *      /proc/net/vlan/<device> file and inode operations
- */
-
-static int vlandev_seq_open(struct inode *inode, struct file *file)
-{
-        return single_open(file, vlandev_seq_show, PDE_DATA(inode));
-}
-
-static const struct file_operations vlandev_fops = {
-        .open    = vlandev_seq_open,
-        .read    = seq_read,
-        .llseek  = seq_lseek,
-        .release = single_release,
-};
-
-/*
  * Proc filesystem directory entries.
  */
 
@@ -171,9 +155,8 @@ int vlan_proc_add_dev(struct net_device *vlandev)
 
         if (!strcmp(vlandev->name, name_conf))
                 return -EINVAL;
-        vlan->dent =
-                proc_create_data(vlandev->name, S_IFREG | 0600,
-                                 vn->proc_vlan_dir, &vlandev_fops, vlandev);
+        vlan->dent = proc_create_single_data(vlandev->name, S_IFREG | 0600,
+                        vn->proc_vlan_dir, vlandev_seq_show, vlandev);
         if (!vlan->dent)
                 return -ENOBUFS;
         return 0;