Messages in this thread Patch in this message | | | From | Liu Xiang <> | Subject | [PATCH] virtio-balloon: move release_pages_balloon() outside of mutex_unlock(&vb->balloon_lock) | Date | Fri, 26 Mar 2021 17:53:26 +0800 |
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Since pages have been deflated to a local list, there is no race between fill and leak.
Signed-off-by: Liu Xiang <liu.xiang@zlingsmart.com> --- drivers/virtio/virtio_balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 8985fc2ce..7da25b87f 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -303,8 +303,8 @@ static unsigned leak_balloon(struct virtio_balloon *vb, size_t num) */ if (vb->num_pfns != 0) tell_host(vb, vb->deflate_vq); - release_pages_balloon(vb, &pages); mutex_unlock(&vb->balloon_lock); + release_pages_balloon(vb, &pages); return num_freed_pages; } -- 2.17.1
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