diff options
| -rw-r--r-- | drivers/hv/hv_balloon.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index 5e90c5d771a7..b958ded8ac7e 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -1087,10 +1087,12 @@ static void balloon_up(struct work_struct *dummy) struct dm_balloon_response *bl_resp; int alloc_unit; int ret; - bool alloc_error = false; + bool alloc_error; bool done = false; int i; + /* The host balloons pages in 2M granularity. */ + WARN_ON_ONCE(num_pages % PAGES_IN_2M != 0); /* * We will attempt 2M allocations. However, if we fail to @@ -1107,16 +1109,18 @@ static void balloon_up(struct work_struct *dummy) num_pages -= num_ballooned; + alloc_error = false; num_ballooned = alloc_balloon_pages(&dm_device, num_pages, bl_resp, alloc_unit, &alloc_error); - if ((alloc_error) && (alloc_unit != 1)) { + if (alloc_unit != 1 && num_ballooned == 0) { alloc_unit = 1; continue; } - if ((alloc_error) || (num_ballooned == num_pages)) { + if ((alloc_unit == 1 && alloc_error) || + (num_ballooned == num_pages)) { bl_resp->more_pages = 0; done = true; dm_device.state = DM_INITIALIZED; |