[PATCH] freepgt: mpnt to vma cleanup

While dabbling here in mmap.c, clean up mysterious "mpnt"s to "vma"s.

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

diff --git a/mm/mmap.c b/mm/mmap.c
index f8c61b2..0fa87a5 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1602,14 +1602,13 @@ static void unmap_vma(struct mm_struct *mm, struct vm_area_struct *area)
  * Ok - we have the memory areas we should free on the 'free' list,
  * so release them, and do the vma updates.
  */
-static void unmap_vma_list(struct mm_struct *mm,
-       struct vm_area_struct *mpnt)
+static void unmap_vma_list(struct mm_struct *mm, struct vm_area_struct *vma)
 {
        do {
-               struct vm_area_struct *next = mpnt->vm_next;
-               unmap_vma(mm, mpnt);
-               mpnt = next;
-       } while (mpnt != NULL);
+               struct vm_area_struct *next = vma->vm_next;
+               unmap_vma(mm, vma);
+               vma = next;
+       } while (vma);
        validate_mm(mm);
 }
 
@@ -1720,7 +1719,7 @@ int split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
 int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 {
        unsigned long end;
-       struct vm_area_struct *mpnt, *prev, *last;
+       struct vm_area_struct *vma, *prev, *last;
 
        if ((start & ~PAGE_MASK) || start > TASK_SIZE || len > TASK_SIZE-start)
                return -EINVAL;
@@ -1729,14 +1728,14 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
                return -EINVAL;
 
        /* Find the first overlapping VMA */
-       mpnt = find_vma_prev(mm, start, &prev);
-       if (!mpnt)
+       vma = find_vma_prev(mm, start, &prev);
+       if (!vma)
                return 0;
-       /* we have  start < mpnt->vm_end  */
+       /* we have  start < vma->vm_end  */
 
        /* if it doesn't overlap, we have nothing.. */
        end = start + len;
-       if (mpnt->vm_start >= end)
+       if (vma->vm_start >= end)
                return 0;
 
        /*
@@ -1746,11 +1745,11 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
         * unmapped vm_area_struct will remain in use: so lower split_vma
         * places tmp vma above, and higher split_vma places tmp vma below.
         */
-       if (start > mpnt->vm_start) {
-               int error = split_vma(mm, mpnt, start, 0);
+       if (start > vma->vm_start) {
+               int error = split_vma(mm, vma, start, 0);
                if (error)
                        return error;
-               prev = mpnt;
+               prev = vma;
        }
 
        /* Does it split the last one? */
@@ -1760,16 +1759,16 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
                if (error)
                        return error;
        }
-       mpnt = prev? prev->vm_next: mm->mmap;
+       vma = prev? prev->vm_next: mm->mmap;
 
        /*
         * Remove the vma's, and unmap the actual pages
         */
-       detach_vmas_to_be_unmapped(mm, mpnt, prev, end);
-       unmap_region(mm, mpnt, prev, start, end);
+       detach_vmas_to_be_unmapped(mm, vma, prev, end);
+       unmap_region(mm, vma, prev, start, end);
 
        /* Fix up all other VM information */
-       unmap_vma_list(mm, mpnt);
+       unmap_vma_list(mm, vma);
 
        return 0;
 }