diff options
| -rw-r--r-- | mm/madvise.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index 60542d006ec1..93ee375b38e7 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -287,9 +287,11 @@ asmlinkage long sys_madvise(unsigned long start, size_t len_in, int behavior) struct vm_area_struct * vma, *prev; int unmapped_error = 0; int error = -EINVAL; + int write; size_t len; - if (madvise_need_mmap_write(behavior)) + write = madvise_need_mmap_write(behavior); + if (write) down_write(¤t->mm->mmap_sem); else down_read(¤t->mm->mmap_sem); @@ -354,7 +356,7 @@ asmlinkage long sys_madvise(unsigned long start, size_t len_in, int behavior) vma = find_vma(current->mm, start); } out: - if (madvise_need_mmap_write(behavior)) + if (write) up_write(¤t->mm->mmap_sem); else up_read(¤t->mm->mmap_sem); |