[PATCH] mm: remove_vma_list consolidation

unmap_vma doesn't amount to much, let's put it inside unmap_vma_list.  Except
it doesn't unmap anything, unmap_region just did the unmapping: rename it to
remove_vma_list.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 12 insertions, 24 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index e1780266ac7d..eeefe19a0fac 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1603,35 +1603,23 @@ find_extend_vma(struct mm_struct * mm, unsigned long addr)
 }
 #endif
 
-/* Normal function to fix up a mapping
- * This function is the default for when an area has no specific
- * function.  This may be used as part of a more specific routine.
- *
- * By the time this function is called, the area struct has been
- * removed from the process mapping list.
- */
-static void unmap_vma(struct mm_struct *mm, struct vm_area_struct *vma)
-{
-        long nrpages = vma_pages(vma);
-
-        mm->total_vm -= nrpages;
-        if (vma->vm_flags & VM_LOCKED)
-                mm->locked_vm -= nrpages;
-        vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages);
-        remove_vm_struct(vma);
-}
-
 /*
- * Update the VMA and inode share lists.
- *
- * Ok - we have the memory areas we should free on the 'free' list,
+ * Ok - we have the memory areas we should free on the vma list,
  * so release them, and do the vma updates.
+ *
+ * Called with the mm semaphore held.
  */
-static void unmap_vma_list(struct mm_struct *mm, struct vm_area_struct *vma)
+static void remove_vma_list(struct mm_struct *mm, struct vm_area_struct *vma)
 {
         do {
                 struct vm_area_struct *next = vma->vm_next;
-                unmap_vma(mm, vma);
+                long nrpages = vma_pages(vma);
+
+                mm->total_vm -= nrpages;
+                if (vma->vm_flags & VM_LOCKED)
+                        mm->locked_vm -= nrpages;
+                vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages);
+                remove_vm_struct(vma);
                 vma = next;
         } while (vma);
         validate_mm(mm);
@@ -1799,7 +1787,7 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
         unmap_region(mm, vma, prev, start, end);
 
         /* Fix up all other VM information */
-        unmap_vma_list(mm, vma);
+        remove_vma_list(mm, vma);
 
         return 0;
 }