return !proc_pid(dentry->d_inode)->tasks[PIDTYPE_PID].first;
 }
 
-static struct dentry_operations pid_dentry_operations =
+static const struct dentry_operations pid_dentry_operations =
 {
        .d_revalidate   = pid_revalidate,
        .d_delete       = pid_delete_dentry,
        return 0;
 }
 
-static struct dentry_operations tid_fd_dentry_operations =
+static const struct dentry_operations tid_fd_dentry_operations =
 {
        .d_revalidate   = tid_fd_revalidate,
        .d_delete       = pid_delete_dentry,
        return 0;
 }
 
-static struct dentry_operations proc_base_dentry_operations =
+static const struct dentry_operations proc_base_dentry_operations =
 {
        .d_revalidate   = proc_base_revalidate,
        .d_delete       = pid_delete_dentry,
 
        return 1;
 }
 
-static struct dentry_operations proc_dentry_operations =
+static const struct dentry_operations proc_dentry_operations =
 {
        .d_delete       = proc_delete_dentry,
 };
 
 #include <linux/security.h>
 #include "internal.h"
 
-static struct dentry_operations proc_sys_dentry_operations;
+static const struct dentry_operations proc_sys_dentry_operations;
 static const struct file_operations proc_sys_file_operations;
 static const struct inode_operations proc_sys_inode_operations;
 static const struct file_operations proc_sys_dir_file_operations;
        return !sysctl_is_seen(PROC_I(dentry->d_inode)->sysctl);
 }
 
-static struct dentry_operations proc_sys_dentry_operations = {
+static const struct dentry_operations proc_sys_dentry_operations = {
        .d_revalidate   = proc_sys_revalidate,
        .d_delete       = proc_sys_delete,
        .d_compare      = proc_sys_compare,