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path: root/drivers/virtio/virtio_balloon.c
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Diffstat (limited to 'drivers/virtio/virtio_balloon.c')
-rw-r--r--drivers/virtio/virtio_balloon.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 2d5d252ef4..1fe93e93f5 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -111,7 +111,7 @@ struct virtio_balloon {
struct virtio_balloon_stat stats[VIRTIO_BALLOON_S_NR];
/* Shrinker to return free pages - VIRTIO_BALLOON_F_FREE_PAGE_HINT */
- struct shrinker shrinker;
+ struct shrinker *shrinker;
/* OOM notifier to deflate on OOM - VIRTIO_BALLOON_F_DEFLATE_ON_OOM */
struct notifier_block oom_nb;
@@ -745,7 +745,7 @@ static void report_free_page_func(struct work_struct *work)
* 2) update the host about the old page removed from vb->pages list;
*
* This function preforms the balloon page migration task.
- * Called through balloon_mapping->a_ops->migratepage
+ * Called through movable_operations->migrate_page
*/
static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info,
struct page *newpage, struct page *page, enum migrate_mode mode)
@@ -820,8 +820,7 @@ static unsigned long shrink_free_pages(struct virtio_balloon *vb,
static unsigned long virtio_balloon_shrinker_scan(struct shrinker *shrinker,
struct shrink_control *sc)
{
- struct virtio_balloon *vb = container_of(shrinker,
- struct virtio_balloon, shrinker);
+ struct virtio_balloon *vb = shrinker->private_data;
return shrink_free_pages(vb, sc->nr_to_scan);
}
@@ -829,8 +828,7 @@ static unsigned long virtio_balloon_shrinker_scan(struct shrinker *shrinker,
static unsigned long virtio_balloon_shrinker_count(struct shrinker *shrinker,
struct shrink_control *sc)
{
- struct virtio_balloon *vb = container_of(shrinker,
- struct virtio_balloon, shrinker);
+ struct virtio_balloon *vb = shrinker->private_data;
return vb->num_free_page_blocks * VIRTIO_BALLOON_HINT_BLOCK_PAGES;
}
@@ -851,16 +849,22 @@ static int virtio_balloon_oom_notify(struct notifier_block *nb,
static void virtio_balloon_unregister_shrinker(struct virtio_balloon *vb)
{
- unregister_shrinker(&vb->shrinker);
+ shrinker_free(vb->shrinker);
}
static int virtio_balloon_register_shrinker(struct virtio_balloon *vb)
{
- vb->shrinker.scan_objects = virtio_balloon_shrinker_scan;
- vb->shrinker.count_objects = virtio_balloon_shrinker_count;
- vb->shrinker.seeks = DEFAULT_SEEKS;
+ vb->shrinker = shrinker_alloc(0, "virtio-balloon");
+ if (!vb->shrinker)
+ return -ENOMEM;
- return register_shrinker(&vb->shrinker, "virtio-balloon");
+ vb->shrinker->scan_objects = virtio_balloon_shrinker_scan;
+ vb->shrinker->count_objects = virtio_balloon_shrinker_count;
+ vb->shrinker->private_data = vb;
+
+ shrinker_register(vb->shrinker);
+
+ return 0;
}
static int virtballoon_probe(struct virtio_device *vdev)