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| author | Namhyung Kim <namhyung@gmail.com> | 2011-05-24 17:11:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-25 08:39:06 -0700 |
| commit | d75a310c42c616c168953ed45c1091074f97828c (patch) | |
| tree | 95b4f45787b3d1820987439c8e8bbbbd5158fe14 | |
| parent | e922c4c5360980bfeb862b3ec307d36bb344dcae (diff) | |
| download | linux-stable-d75a310c42c616c168953ed45c1091074f97828c.tar.gz linux-stable-d75a310c42c616c168953ed45c1091074f97828c.tar.bz2 linux-stable-d75a310c42c616c168953ed45c1091074f97828c.zip | |
mm: nommu: check the vma list when unmapping file-mapped vma
Now we have the sorted vma list, use it in do_munmap() to check that we
have an exact match.
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/nommu.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index e5318f8efde5..0563fd9003df 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1635,7 +1635,6 @@ static int shrink_vma(struct mm_struct *mm, int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) { struct vm_area_struct *vma; - struct rb_node *rb; unsigned long end = start + len; int ret; @@ -1668,9 +1667,8 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) } if (end == vma->vm_end) goto erase_whole_vma; - rb = rb_next(&vma->vm_rb); - vma = rb_entry(rb, struct vm_area_struct, vm_rb); - } while (rb); + vma = vma->vm_next; + } while (vma); kleave(" = -EINVAL [split file]"); return -EINVAL; } else { |