diff options
Diffstat (limited to 'drivers/xen/gntdev.c')
| -rw-r--r-- | drivers/xen/gntdev.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 67b9163db718..2ea0b3b2a91d 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -433,7 +433,7 @@ static struct page *gntdev_vma_find_special_page(struct vm_area_struct *vma, return map->pages[(addr - map->pages_vm_start) >> PAGE_SHIFT]; } -static struct vm_operations_struct gntdev_vmops = { +static const struct vm_operations_struct gntdev_vmops = { .open = gntdev_vma_open, .close = gntdev_vma_close, .find_special_page = gntdev_vma_find_special_page, @@ -568,12 +568,14 @@ static int gntdev_release(struct inode *inode, struct file *flip) pr_debug("priv %p\n", priv); + mutex_lock(&priv->lock); while (!list_empty(&priv->maps)) { map = list_entry(priv->maps.next, struct grant_map, next); list_del(&map->next); gntdev_put_map(NULL /* already removed */, map); } WARN_ON(!list_empty(&priv->freeable_maps)); + mutex_unlock(&priv->lock); if (use_ptemod) mmu_notifier_unregister(&priv->mn, priv->mm); |