[PATCH 02/16] hv_balloon: Replace spin_is_locked() with lockdep

From: Lance Roy
Date: Wed Oct 03 2018 - 01:39:52 EST


lockdep_assert_held() is better suited to checking locking requirements,
since it won't get confused when someone else holds the lock. This is
also a step towards possibly removing spin_is_locked().

Signed-off-by: Lance Roy <ldr709@xxxxxxxxx>
Cc: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Cc: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>
Cc: <devel@xxxxxxxxxxxxxxxxxxxxxx>
---
drivers/hv/hv_balloon.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index b1b788082793..41631512ae97 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -689,7 +689,7 @@ static void hv_page_online_one(struct hv_hotadd_state *has, struct page *pg)
__online_page_increment_counters(pg);
__online_page_free(pg);

- WARN_ON_ONCE(!spin_is_locked(&dm_device.ha_lock));
+ lockdep_assert_held(&dm_device.ha_lock);
dm_device.num_pages_onlined++;
}

--
2.19.0