[PATCH] namespaces: utsname: switch to using uts namespaces
[linux-2.6.git] / arch / x86_64 / kernel / sys_x86_64.c
index 477d8be..76bf7c2 100644 (file)
@@ -68,13 +68,7 @@ out:
 static void find_start_end(unsigned long flags, unsigned long *begin,
                           unsigned long *end)
 {
-#ifdef CONFIG_IA32_EMULATION
-       if (test_thread_flag(TIF_IA32)) { 
-               *begin = TASK_UNMAPPED_32;
-               *end = IA32_PAGE_OFFSET; 
-       } else 
-#endif
-       if (flags & MAP_32BIT) { 
+       if (!test_thread_flag(TIF_IA32) && (flags & MAP_32BIT)) {
                /* This is usually used needed to map code in small
                   model, so it needs to be in the first 31bit. Limit
                   it to that.  This means we need to move the
@@ -84,10 +78,10 @@ static void find_start_end(unsigned long flags, unsigned long *begin,
                   of playground for now. -AK */ 
                *begin = 0x40000000; 
                *end = 0x80000000;              
-       } else { 
-               *begin = TASK_UNMAPPED_64; 
+       } else {
+               *begin = TASK_UNMAPPED_BASE;
                *end = TASK_SIZE; 
-               }
+       }
 } 
 
 unsigned long
@@ -111,6 +105,11 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
                    (!vma || addr + len <= vma->vm_start))
                        return addr;
        }
+       if (((flags & MAP_32BIT) || test_thread_flag(TIF_IA32))
+           && len <= mm->cached_hole_size) {
+               mm->cached_hole_size = 0;
+               mm->free_area_cache = begin;
+       }
        addr = mm->free_area_cache;
        if (addr < begin) 
                addr = begin; 
@@ -126,6 +125,7 @@ full_search:
                         */
                        if (start_addr != begin) {
                                start_addr = addr = begin;
+                               mm->cached_hole_size = 0;
                                goto full_search;
                        }
                        return -ENOMEM;
@@ -137,6 +137,9 @@ full_search:
                        mm->free_area_cache = addr + len;
                        return addr;
                }
+               if (addr + mm->cached_hole_size < vma->vm_start)
+                       mm->cached_hole_size = vma->vm_start - addr;
+
                addr = vma->vm_end;
        }
 }
@@ -145,29 +148,9 @@ asmlinkage long sys_uname(struct new_utsname __user * name)
 {
        int err;
        down_read(&uts_sem);
-       err = copy_to_user(name, &system_utsname, sizeof (*name));
+       err = copy_to_user(name, utsname(), sizeof (*name));
        up_read(&uts_sem);
        if (personality(current->personality) == PER_LINUX32) 
                err |= copy_to_user(&name->machine, "i686", 5);                 
        return err ? -EFAULT : 0;
 }
-
-asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
-{
-       unsigned long raddr;
-       return do_shmat(shmid,shmaddr,shmflg,&raddr) ?: (long)raddr;
-}
-
-asmlinkage long sys_time64(long __user * tloc)
-{
-       struct timeval now; 
-       int i; 
-
-       do_gettimeofday(&now);
-       i = now.tv_sec;
-       if (tloc) {
-               if (put_user(i,tloc))
-                       i = -EFAULT;
-       }
-       return i;
-}