Merge git://oss.sgi.com:8090/xfs/xfs-2.6

[linux-drm-fsl-dcu.git] / include / asm-s390 / uaccess.h

diff --git a/include/asm-s390/uaccess.h b/include/asm-s390/uaccess.h
index e2047b0c90921a1898c1b6a94dadede886d25ec3..0235970278f0574516ca7638e08737ce58c3ef3c 100644 (file)
--- a/include/asm-s390/uaccess.h
+++ b/include/asm-s390/uaccess.h
@@ -38,25 +38,14 @@
 #define get_ds()        (KERNEL_DS)
 #define get_fs()        (current->thread.mm_segment)
 
-#ifdef __s390x__
 #define set_fs(x) \
 ({                                                                     \
        unsigned long __pto;                                            \
        current->thread.mm_segment = (x);                               \
        __pto = current->thread.mm_segment.ar4 ?                        \
                S390_lowcore.user_asce : S390_lowcore.kernel_asce;      \
-       asm volatile ("lctlg 7,7,%0" : : "m" (__pto) );                 \
+       __ctl_load(__pto, 7, 7);                                        \
 })
-#else /* __s390x__ */
-#define set_fs(x) \
-({                                                                     \
-       unsigned long __pto;                                            \
-       current->thread.mm_segment = (x);                               \
-       __pto = current->thread.mm_segment.ar4 ?                        \
-               S390_lowcore.user_asce : S390_lowcore.kernel_asce;      \
-       asm volatile ("lctl  7,7,%0" : : "m" (__pto) );                 \
-})
-#endif /* __s390x__ */
 
 #define segment_eq(a,b) ((a).ar4 == (b).ar4)
 
@@ -101,6 +90,8 @@ struct uaccess_ops {
 extern struct uaccess_ops uaccess;
 extern struct uaccess_ops uaccess_std;
 extern struct uaccess_ops uaccess_mvcos;
+extern struct uaccess_ops uaccess_mvcos_switch;
+extern struct uaccess_ops uaccess_pt;
 
 static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
 {
@@ -212,7 +203,7 @@ extern int __get_user_bad(void) __attribute__((noreturn));
  * Returns number of bytes that could not be copied.
  * On success, this will be zero.
  */
-static inline unsigned long
+static inline unsigned long __must_check
 __copy_to_user(void __user *to, const void *from, unsigned long n)
 {
        if (__builtin_constant_p(n) && (n <= 256))
@@ -237,7 +228,7 @@ __copy_to_user(void __user *to, const void *from, unsigned long n)
  * Returns number of bytes that could not be copied.
  * On success, this will be zero.
  */
-static inline unsigned long
+static inline unsigned long __must_check
 copy_to_user(void __user *to, const void *from, unsigned long n)
 {
        might_sleep();
@@ -263,7 +254,7 @@ copy_to_user(void __user *to, const void *from, unsigned long n)
  * If some data could not be copied, this function will pad the copied
  * data to the requested size using zero bytes.
  */
-static inline unsigned long
+static inline unsigned long __must_check
 __copy_from_user(void *to, const void __user *from, unsigned long n)
 {
        if (__builtin_constant_p(n) && (n <= 256))
@@ -288,7 +279,7 @@ __copy_from_user(void *to, const void __user *from, unsigned long n)
  * If some data could not be copied, this function will pad the copied
  * data to the requested size using zero bytes.
  */
-static inline unsigned long
+static inline unsigned long __must_check
 copy_from_user(void *to, const void __user *from, unsigned long n)
 {
        might_sleep();
@@ -299,13 +290,13 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
        return n;
 }
 
-static inline unsigned long
+static inline unsigned long __must_check
 __copy_in_user(void __user *to, const void __user *from, unsigned long n)
 {
        return uaccess.copy_in_user(n, to, from);
 }
 
-static inline unsigned long
+static inline unsigned long __must_check
 copy_in_user(void __user *to, const void __user *from, unsigned long n)
 {
        might_sleep();
@@ -317,7 +308,7 @@ copy_in_user(void __user *to, const void __user *from, unsigned long n)
 /*
  * Copy a null terminated string from userspace.
  */
-static inline long
+static inline long __must_check
 strncpy_from_user(char *dst, const char __user *src, long count)
 {
         long res = -EFAULT;
@@ -354,13 +345,13 @@ strnlen_user(const char __user * src, unsigned long n)
  * Zero Userspace
  */
 
-static inline unsigned long
+static inline unsigned long __must_check
 __clear_user(void __user *to, unsigned long n)
 {
        return uaccess.clear_user(n, to);
 }
 
-static inline unsigned long
+static inline unsigned long __must_check
 clear_user(void __user *to, unsigned long n)
 {
        might_sleep();