ia64: Mark access_ok() as likely to succeed (as is done in x86 tree).

arch/ia64/kernel/traps.c

@@ -335,7 +335,8 @@ handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr)
 	if ((fpu_swa_count < 4) && !(current->thread.flags & IA64_THREAD_FPEMU_NOPRINT)) {
 		last_time = jiffies;
 		++fpu_swa_count;
-		printk(KERN_WARNING "%s(%d): floating-point assist fault at ip %016lx, isr %016lx\n",
+		printk(KERN_WARNING
+		       "%s(%d): floating-point assist fault at ip %016lx, isr %016lx\n",
 		       current->comm, current->pid, regs->cr_iip + ia64_psr(regs)->ri, isr);
 	}
 

include/asm-ia64/uaccess.h

@@ -30,6 +30,7 @@
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
+#include <linux/compiler.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
 
@@ -57,9 +58,10 @@
  * address TASK_SIZE is never valid.  We also need to make sure that the address doesn't
  * point inside the virtually mapped linear page table.
  */
-#define __access_ok(addr,size,segment)	(((unsigned long) (addr)) <= (segment).seg	\
-	 && ((segment).seg == KERNEL_DS.seg						\
-	     || REGION_OFFSET((unsigned long) (addr)) < RGN_MAP_LIMIT))
+#define __access_ok(addr,size,segment)						\
+	likely(((unsigned long) (addr)) <= (segment).seg			\
+	       && ((segment).seg == KERNEL_DS.seg				\
+		   || REGION_OFFSET((unsigned long) (addr)) < RGN_MAP_LIMIT))
 #define access_ok(type,addr,size)	__access_ok((addr),(size),get_fs())
 
 static inline int