[PATCH] mark struct file_operations const 1
Many struct file_operations in the kernel can be "const". Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data. In addition it'll catch accidental writes at compile time to
these shared resources.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 5ae10dd..47ff2f4 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -377,7 +377,7 @@
/* ax25_route.c */
extern void ax25_rt_device_down(struct net_device *);
extern int ax25_rt_ioctl(unsigned int, void __user *);
-extern struct file_operations ax25_route_fops;
+extern const struct file_operations ax25_route_fops;
extern ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev);
extern int ax25_rt_autobind(ax25_cb *, ax25_address *);
extern struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *);
@@ -430,7 +430,7 @@
extern int ax25_uid_policy;
extern ax25_uid_assoc *ax25_findbyuid(uid_t);
extern int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *);
-extern struct file_operations ax25_uid_fops;
+extern const struct file_operations ax25_uid_fops;
extern void ax25_uid_free(void);
/* sysctl_net_ax25.c */
diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
index 41bcc9e..173c7c1 100644
--- a/include/net/netfilter/nf_conntrack_expect.h
+++ b/include/net/netfilter/nf_conntrack_expect.h
@@ -8,7 +8,7 @@
extern struct list_head nf_conntrack_expect_list;
extern struct kmem_cache *nf_conntrack_expect_cachep;
-extern struct file_operations exp_file_ops;
+extern const struct file_operations exp_file_ops;
struct nf_conntrack_expect
{
diff --git a/include/net/netrom.h b/include/net/netrom.h
index e0ca112..f06852b 100644
--- a/include/net/netrom.h
+++ b/include/net/netrom.h
@@ -215,8 +215,8 @@
extern int nr_rt_ioctl(unsigned int, void __user *);
extern void nr_link_failed(ax25_cb *, int);
extern int nr_route_frame(struct sk_buff *, ax25_cb *);
-extern struct file_operations nr_nodes_fops;
-extern struct file_operations nr_neigh_fops;
+extern const struct file_operations nr_nodes_fops;
+extern const struct file_operations nr_neigh_fops;
extern void nr_rt_free(void);
/* nr_subr.c */
diff --git a/include/net/rose.h b/include/net/rose.h
index 4c05a88..a4047d3 100644
--- a/include/net/rose.h
+++ b/include/net/rose.h
@@ -189,9 +189,9 @@
/* rose_route.c */
extern struct rose_neigh rose_loopback_neigh;
-extern struct file_operations rose_neigh_fops;
-extern struct file_operations rose_nodes_fops;
-extern struct file_operations rose_routes_fops;
+extern const struct file_operations rose_neigh_fops;
+extern const struct file_operations rose_nodes_fops;
+extern const struct file_operations rose_routes_fops;
extern void rose_add_loopback_neigh(void);
extern int __must_check rose_add_loopback_node(rose_address *);