From 5a8f1f80e9dca791ee240213477df99e88258073 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 31 Aug 2016 15:17:04 -0700 Subject: [PATCH] dm: add two lockdep_assert_held() statements Document the locking assumptions for the __bind() and __dm_suspend() functions. Signed-off-by: Bart Van Assche Signed-off-by: Mike Snitzer --- drivers/md/dm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 0f2928b..0708c62 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. -- 2.7.4