compat_{get,put}_bitmap(): use unsafe_{get,put}_user()
unroll the inner loops, while we are at it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 1c5f315..94ceb03 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -388,8 +388,7 @@ asmlinkage long compat_sys_wait4(compat_pid_t pid,
#define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t))
-#define BITS_TO_COMPAT_LONGS(bits) \
- (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG)
+#define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG)
long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
unsigned long bitmap_size);