[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>

1 files changed, 17 insertions, 18 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index f8c61b2385ff..0fa87a5ae2cc 100644
--- 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;
 }