diff options
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index f8c61b2385f..0fa87a5ae2c 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; } |