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Diffstat (limited to 'kernel/drivers/xen/gntdev.c')
| -rw-r--r-- | kernel/drivers/xen/gntdev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/drivers/xen/gntdev.c b/kernel/drivers/xen/gntdev.c index 892748507..4bd23bba8 100644 --- a/kernel/drivers/xen/gntdev.c +++ b/kernel/drivers/xen/gntdev.c @@ -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); |