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dm: add two lockdep_assert_held() statements

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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>
This commit is contained in:
Bart Van Assche 2016-08-31 15:17:04 -07:00 committed by Mike Snitzer
parent c533f249a1
commit 5a8f1f80e9
1 changed files with 4 additions and 0 deletions
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4
drivers/md/dm.c
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@ -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.