Merge to Fedora kernel-2.6.17-1.2187_FC5 patched with stable patch-2.6.17.13-vs2...

[linux-2.6.git] / arch / ia64 / kernel / sys_ia64.c

diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
index c7b943f..3edefc8 100644 (file)
--- a/arch/ia64/kernel/sys_ia64.c
+++ b/arch/ia64/kernel/sys_ia64.c
@@ -164,10 +164,25 @@ sys_pipe (void)
        return retval;
 }
 
+int ia64_map_check_rgn(unsigned long addr, unsigned long len,
+               unsigned long flags)
+{
+       unsigned long roff;
+
+       /*
+        * Don't permit mappings into unmapped space, the virtual page table
+        * of a region, or across a region boundary.  Note: RGN_MAP_LIMIT is
+        * equal to 2^n-PAGE_SIZE (for some integer n <= 61) and len > 0.
+        */
+       roff = REGION_OFFSET(addr);
+       if ((len > RGN_MAP_LIMIT) || (roff > (RGN_MAP_LIMIT - len)))
+               return -EINVAL;
+       return 0;
+}
+
 static inline unsigned long
 do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, unsigned long pgoff)
 {
-       unsigned long roff;
        struct file *file = NULL;
 
        flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
@@ -189,17 +204,6 @@ do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, un
                goto out;
        }
 
-       /*
-        * Don't permit mappings into unmapped space, the virtual page table of a region,
-        * or across a region boundary.  Note: RGN_MAP_LIMIT is equal to 2^n-PAGE_SIZE
-        * (for some integer n <= 61) and len > 0.
-        */
-       roff = REGION_OFFSET(addr);
-       if ((len > RGN_MAP_LIMIT) || (roff > (RGN_MAP_LIMIT - len))) {
-               addr = -EINVAL;
-               goto out;
-       }
-
        down_write(&current->mm->mmap_sem);
        addr = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
        up_write(&current->mm->mmap_sem);