aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-02-29 15:14:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-02-29 15:14:33 -0800
commitd7e53922aa47b7a5a91bc34da00348e6ee0ed242 (patch)
tree722dc7b341ae597ded46eedcf6e75456a72c6dea
parentc5f2ac92c69c64ea303a7b28b17143fbf601182d (diff)
parent4eb05d562ea1ea34ff607aa877aefbf05b21c140 (diff)
downloadlinux-stericsson-d7e53922aa47b7a5a91bc34da00348e6ee0ed242.tar.gz
Merge tag 'for-linus' of git://github.com/rustyrussell/linux
Merge virtio pull request from Rusty Russell. * tag 'for-linus' of git://github.com/rustyrussell/linux: virtio: balloon: leak / fill balloon across S4
-rw-r--r--drivers/virtio/virtio_balloon.c33
1 files changed, 22 insertions, 11 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 95aeedf198f8..958e5129c601 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -367,29 +367,45 @@ static void __devexit virtballoon_remove(struct virtio_device *vdev)
#ifdef CONFIG_PM
static int virtballoon_freeze(struct virtio_device *vdev)
{
+ struct virtio_balloon *vb = vdev->priv;
+
/*
* The kthread is already frozen by the PM core before this
* function is called.
*/
+ while (vb->num_pages)
+ leak_balloon(vb, vb->num_pages);
+ update_balloon_size(vb);
+
/* Ensure we don't get any more requests from the host */
vdev->config->reset(vdev);
vdev->config->del_vqs(vdev);
return 0;
}
+static int restore_common(struct virtio_device *vdev)
+{
+ struct virtio_balloon *vb = vdev->priv;
+ int ret;
+
+ ret = init_vqs(vdev->priv);
+ if (ret)
+ return ret;
+
+ fill_balloon(vb, towards_target(vb));
+ update_balloon_size(vb);
+ return 0;
+}
+
static int virtballoon_thaw(struct virtio_device *vdev)
{
- return init_vqs(vdev->priv);
+ return restore_common(vdev);
}
static int virtballoon_restore(struct virtio_device *vdev)
{
struct virtio_balloon *vb = vdev->priv;
- struct page *page, *page2;
-
- /* We're starting from a clean slate */
- vb->num_pages = 0;
/*
* If a request wasn't complete at the time of freezing, this
@@ -397,12 +413,7 @@ static int virtballoon_restore(struct virtio_device *vdev)
*/
vb->need_stats_update = 0;
- /* We don't have these pages in the balloon anymore! */
- list_for_each_entry_safe(page, page2, &vb->pages, lru) {
- list_del(&page->lru);
- totalram_pages++;
- }
- return init_vqs(vdev->priv);
+ return restore_common(vdev);
}
#endif