mm: Don't pin ZERO_PAGE in pin_user_pages()

[linux-block.git] / include / linux / sysrq.h

diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
index 8e159e16850f5d891c64f9f83789cf7ba01a7215..3a582ec7a2f1a7d01b3822fda0658264710b441c 100644 (file)
--- a/include/linux/sysrq.h
+++ b/include/linux/sysrq.h
@@ -30,10 +30,10 @@
 #define SYSRQ_ENABLE_RTNICE    0x0100
 
 struct sysrq_key_op {
-       void (*handler)(int);
-       char *help_msg;
-       char *action_msg;
-       int enable_mask;
+       void (* const handler)(int);
+       const char * const help_msg;
+       const char * const action_msg;
+       const int enable_mask;
 };
 
 #ifdef CONFIG_MAGIC_SYSRQ
@@ -45,9 +45,9 @@ struct sysrq_key_op {
 
 void handle_sysrq(int key);
 void __handle_sysrq(int key, bool check_mask);
-int register_sysrq_key(int key, struct sysrq_key_op *op);
-int unregister_sysrq_key(int key, struct sysrq_key_op *op);
-struct sysrq_key_op *__sysrq_get_key_op(int key);
+int register_sysrq_key(int key, const struct sysrq_key_op *op);
+int unregister_sysrq_key(int key, const struct sysrq_key_op *op);
+extern const struct sysrq_key_op *__sysrq_reboot_op;
 
 int sysrq_toggle_support(int enable_mask);
 int sysrq_mask(void);
@@ -62,12 +62,12 @@ static inline void __handle_sysrq(int key, bool check_mask)
 {
 }
 
-static inline int register_sysrq_key(int key, struct sysrq_key_op *op)
+static inline int register_sysrq_key(int key, const struct sysrq_key_op *op)
 {
        return -EINVAL;
 }
 
-static inline int unregister_sysrq_key(int key, struct sysrq_key_op *op)
+static inline int unregister_sysrq_key(int key, const struct sysrq_key_op *op)
 {
        return -EINVAL;
 }