diff options
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 2454d39dc06..e5318f8efde 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -804,17 +804,15 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma) struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr) { struct vm_area_struct *vma; - struct rb_node *n = mm->mm_rb.rb_node; /* check the cache first */ vma = mm->mmap_cache; if (vma && vma->vm_start <= addr && vma->vm_end > addr) return vma; - /* trawl the tree (there may be multiple mappings in which addr + /* trawl the list (there may be multiple mappings in which addr * resides) */ - for (n = rb_first(&mm->mm_rb); n; n = rb_next(n)) { - vma = rb_entry(n, struct vm_area_struct, vm_rb); + for (vma = mm->mmap; vma; vma = vma->vm_next) { if (vma->vm_start > addr) return NULL; if (vma->vm_end > addr) { @@ -854,7 +852,6 @@ static struct vm_area_struct *find_vma_exact(struct mm_struct *mm, unsigned long len) { struct vm_area_struct *vma; - struct rb_node *n = mm->mm_rb.rb_node; unsigned long end = addr + len; /* check the cache first */ @@ -862,10 +859,9 @@ static struct vm_area_struct *find_vma_exact(struct mm_struct *mm, if (vma && vma->vm_start == addr && vma->vm_end == end) return vma; - /* trawl the tree (there may be multiple mappings in which addr + /* trawl the list (there may be multiple mappings in which addr * resides) */ - for (n = rb_first(&mm->mm_rb); n; n = rb_next(n)) { - vma = rb_entry(n, struct vm_area_struct, vm_rb); + for (vma = mm->mmap; vma; vma = vma->vm_next) { if (vma->vm_start < addr) continue; if (vma->vm_start > addr) |