--- mm/nommu.c

+++ mm/nommu.c

@@ -608,7 +608,7 @@ static void protect_vma(struct vm_area_s

*/

static void add_vma_to_mm(struct mm_struct *mm, struct vm_area_struct *vma)

{

- struct vm_area_struct *pvma, **pp;

+ struct vm_area_struct *pvma, **pp, *next;

struct address_space *mapping;

struct rb_node **p, *parent;

@@ -668,8 +668,11 @@ static void add_vma_to_mm(struct mm_stru

break;

}

- vma->vm_next = *pp;

+ next = *pp;

*pp = vma;

+ vma->vm_next = next;

+ if (next)

+ next->vm_prev = vma;

}

/*

@@ -1612,6 +1615,7 @@ void exit_mmap(struct mm_struct *mm)

mm->mmap = vma->vm_next;

delete_vma_from_mm(vma);

delete_vma(mm, vma);

+ cond_resched();

}

kleave("");