switch ->get_link() to delayed_call, kill ->put_link()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 1a489e2..71660bb 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1565,7 +1565,8 @@
 }
 
 static const char *proc_pid_get_link(struct dentry *dentry,
-				     struct inode *inode, void **cookie)
+				     struct inode *inode,
+				     struct delayed_call *done)
 {
 	struct path path;
 	int error = -EACCES;
@@ -1949,12 +1950,13 @@
  */
 static const char *
 proc_map_files_get_link(struct dentry *dentry,
-			struct inode *inode, void **cookie)
+			struct inode *inode,
+		        struct delayed_call *done)
 {
 	if (!capable(CAP_SYS_ADMIN))
 		return ERR_PTR(-EPERM);
 
-	return proc_pid_get_link(dentry, inode, NULL);
+	return proc_pid_get_link(dentry, inode, done);
 }
 
 /*