[dm-devel] [PATCH 5/9] dm: Add two lockdep_assert_held() statements
Bart Van Assche
bart.vanassche at sandisk.com
Wed Aug 31 22:17:04 UTC 2016
Document the locking assumptions for the __bind() and __dm_suspend()
functions.
Signed-off-by: Bart Van Assche <bart.vanassche at sandisk.com>
---
drivers/md/dm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 090ef31..0775411 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1648,6 +1648,8 @@ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t,
struct request_queue *q = md->queue;
sector_t size;
+ lockdep_assert_held(&md->suspend_lock);
+
size = dm_table_get_size(t);
/*
@@ -2089,6 +2091,8 @@ static int __dm_suspend(struct mapped_device *md, struct dm_table *map,
bool noflush = suspend_flags & DM_SUSPEND_NOFLUSH_FLAG;
int r;
+ lockdep_assert_held(&md->suspend_lock);
+
/*
* DMF_NOFLUSH_SUSPENDING must be set before presuspend.
* This flag is cleared before dm_suspend returns.
--
2.9.3
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