Re: [RFC][PATCH 3/6] SLIM main patch

Dave Hansen
2006-07-14T17:44:36Z

On Fri, 2006-07-14 at 10:24 -0700, Kylene Jo Hall wrote:
> +static void revoke_mmap_wperm(struct slm_file_xattr *cur_level)
> +{
> + struct vm_area_struct *mpnt;
> + struct file *file;
> + struct dentry *dentry;
> + struct slm_isec_data *isec;
> +
> + flush_cache_mm(current->mm);
> +
> + for (mpnt = current->mm->mmap; mpnt; mpnt = mpnt->vm_next) {
> + file = mpnt->vm_file;
> + if (!file)
> + continue;

You need to hold the mmap_sem for read while walking this list.

-- Dave