Although lock_page() and its family can cause deadlock, lockdep have not
worked with them, becasue unlock_page() might be called in a different
context from the acquire context, which violated lockdep's assumption.
Now CONFIG_LOCKDEP_CROSSRELEASE has been introduced, lockdep can work
with page
Although lock_page() and its family can cause deadlock, lockdep have not
worked with them, becasue unlock_page() might be called in a different
context from the acquire context, which violated lockdep's assumption.
Now CONFIG_LOCKDEP_CROSSRELEASE has been introduced, lockdep can work
with page
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