[PATCH] x86-64/i386: Intel HT, Multi core detection fixes

[linux-2.6-microblaze.git] / mm / nommu.c

diff --git a/mm/nommu.c b/mm/nommu.c
index fd4e8df..d1e076a 100644 (file)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -57,6 +57,11 @@ DECLARE_RWSEM(nommu_vma_sem);
 struct vm_operations_struct generic_file_vm_ops = {
 };
 
+EXPORT_SYMBOL(vmalloc);
+EXPORT_SYMBOL(vfree);
+EXPORT_SYMBOL(vmalloc_to_page);
+EXPORT_SYMBOL(vmalloc_32);
+
 /*
  * Handle all mappings that got truncated by a "truncate()"
  * system call.
@@ -142,6 +147,8 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
        return(i);
 }
 
+EXPORT_SYMBOL(get_user_pages);
+
 DEFINE_RWLOCK(vmlist_lock);
 struct vm_struct *vmlist;
 
@@ -150,8 +157,7 @@ void vfree(void *addr)
        kfree(addr);
 }
 
-void *__vmalloc(unsigned long size, unsigned int __nocast gfp_mask,
-                       pgprot_t prot)
+void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot)
 {
        /*
         * kmalloc doesn't like __GFP_HIGHMEM for some reason
@@ -852,7 +858,7 @@ unsigned long do_mmap_pgoff(struct file *file,
  error_getting_vma:
        up_write(&nommu_vma_sem);
        kfree(vml);
-       printk("Allocation of vml for %lu byte allocation from process %d failed\n",
+       printk("Allocation of vma for %lu byte allocation from process %d failed\n",
               len, current->pid);
        show_free_areas();
        return -ENOMEM;
@@ -909,7 +915,7 @@ int do_munmap(struct mm_struct *mm, unsigned long addr, size_t len)
 
        for (parent = &mm->context.vmlist; *parent; parent = &(*parent)->next)
                if ((*parent)->vma->vm_start == addr &&
-                   (*parent)->vma->vm_end == end)
+                   ((len == 0) || ((*parent)->vma->vm_end == end)))
                        goto found;
 
        printk("munmap of non-mmaped memory by process %d (%s): %p\n",
@@ -925,6 +931,8 @@ int do_munmap(struct mm_struct *mm, unsigned long addr, size_t len)
        realalloc -= kobjsize(vml);
        askedalloc -= sizeof(*vml);
        kfree(vml);
+
+       update_hiwater_vm(mm);
        mm->total_vm -= len >> PAGE_SHIFT;
 
 #ifdef DEBUG
@@ -1041,7 +1049,8 @@ struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr)
 
 EXPORT_SYMBOL(find_vma);
 
-struct page * follow_page(struct mm_struct *mm, unsigned long addr, int write)
+struct page *follow_page(struct mm_struct *mm, unsigned long address,
+                       unsigned int foll_flags)
 {
        return NULL;
 }
@@ -1054,7 +1063,8 @@ struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr)
 int remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
                unsigned long to, unsigned long size, pgprot_t prot)
 {
-       return -EPERM;
+       vma->vm_start = vma->vm_pgoff << PAGE_SHIFT;
+       return 0;
 }
 
 void swap_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
@@ -1071,18 +1081,6 @@ void arch_unmap_area(struct mm_struct *mm, unsigned long addr)
 {
 }
 
-void update_mem_hiwater(struct task_struct *tsk)
-{
-       unsigned long rss = get_mm_counter(tsk->mm, rss);
-
-       if (likely(tsk->mm)) {
-               if (tsk->mm->hiwater_rss < rss)
-                       tsk->mm->hiwater_rss = rss;
-               if (tsk->mm->hiwater_vm < tsk->mm->total_vm)
-                       tsk->mm->hiwater_vm = tsk->mm->total_vm;
-       }
-}
-
 void unmap_mapping_range(struct address_space *mapping,
                         loff_t const holebegin, loff_t const holelen,
                         int even_cows)