From 540473208f8ac71c25a87e1a2670c3c18dd4d6db Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Mon, 12 Feb 2007 00:55:28 -0800 Subject: [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/net/ax25.h | 4 ++-- include/net/netfilter/nf_conntrack_expect.h | 2 +- include/net/netrom.h | 4 ++-- include/net/rose.h | 6 +++--- 4 files changed, 8 insertions(+), 8 deletions(-) (limited to 'include/net') diff --git a/include/net/ax25.h b/include/net/ax25.h index 5ae10dd2e32..47ff2f46e90 100644 --- a/include/net/ax25.h +++ b/include/net/ax25.h @@ -377,7 +377,7 @@ extern int ax25_check_iframes_acked(ax25_cb *, unsigned short); /* 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 unsigned long ax25_display_timer(struct timer_list *); 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 41bcc9eb420..173c7c1eff2 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 e0ca112024a..f06852bba62 100644 --- a/include/net/netrom.h +++ b/include/net/netrom.h @@ -215,8 +215,8 @@ extern struct net_device *nr_dev_get(ax25_address *); 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 4c05a88b921..a4047d3cf5d 100644 --- a/include/net/rose.h +++ b/include/net/rose.h @@ -189,9 +189,9 @@ extern void rose_enquiry_response(struct sock *); /* 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 *); -- cgit v1.2.3