Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

[pandora-kernel.git] / arch / ia64 / mm / init.c

diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 760dda4..c8da621 100644 (file)
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -176,9 +176,8 @@ ia64_init_addr_space (void)
         * the problem.  When the process attempts to write to the register backing store
         * for the first time, it will get a SEGFAULT in this case.
         */
-       vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+       vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
        if (vma) {
-               memset(vma, 0, sizeof(*vma));
                vma->vm_mm = current->mm;
                vma->vm_start = current->thread.rbs_bot & PAGE_MASK;
                vma->vm_end = vma->vm_start + PAGE_SIZE;
@@ -195,9 +194,8 @@ ia64_init_addr_space (void)
 
        /* map NaT-page at address zero to speed up speculative dereferencing of NULL: */
        if (!(current->personality & MMAP_PAGE_ZERO)) {
-               vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+               vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
                if (vma) {
-                       memset(vma, 0, sizeof(*vma));
                        vma->vm_mm = current->mm;
                        vma->vm_end = PAGE_SIZE;
                        vma->vm_page_prot = __pgprot(pgprot_val(PAGE_READONLY) | _PAGE_MA_NAT);
@@ -650,6 +648,22 @@ count_reserved_pages (u64 start, u64 end, void *arg)
        return 0;
 }
 
+int
+find_max_min_low_pfn (unsigned long start, unsigned long end, void *arg)
+{
+       unsigned long pfn_start, pfn_end;
+#ifdef CONFIG_FLATMEM
+       pfn_start = (PAGE_ALIGN(__pa(start))) >> PAGE_SHIFT;
+       pfn_end = (PAGE_ALIGN(__pa(end - 1))) >> PAGE_SHIFT;
+#else
+       pfn_start = GRANULEROUNDDOWN(__pa(start)) >> PAGE_SHIFT;
+       pfn_end = GRANULEROUNDUP(__pa(end - 1)) >> PAGE_SHIFT;
+#endif
+       min_low_pfn = min(min_low_pfn, pfn_start);
+       max_low_pfn = max(max_low_pfn, pfn_end);
+       return 0;
+}
+
 /*
  * Boot command-line option "nolwsys" can be used to disable the use of any light-weight
  * system call handler.  When this option is in effect, all fsyscalls will end up bubbling