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authorBart Van Assche <bart.vanassche@sandisk.com>2016-08-31 15:17:04 -0700
committerMike Snitzer <snitzer@redhat.com>2016-09-14 13:56:38 -0400
commit5a8f1f80e9dca791ee240213477df99e88258073 (patch)
tree7207d5cb0a8c5f9f7db7cd3956c4c9c1ebcb145e /drivers/md
parentc533f249a166142df4294ec38fa5dcd1903f0400 (diff)
downloadlinux-5a8f1f80e9dca791ee240213477df99e88258073.tar.bz2
dm: add two lockdep_assert_held() statements
Document the locking assumptions for the __bind() and __dm_suspend() functions. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 0f2928b3136b..0708c620c17a 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);
/*
@@ -2094,6 +2096,8 @@ 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.