docs: cgroup-v1: use code block for locking order schema
The locking order schema is a figure (like diagram), which should have been formatted with literal code block for consistency with other figures. Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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@ -287,7 +287,7 @@ When oom event notifier is registered, event will be delivered.
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2.6 Locking
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Lock order is as follows:
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Lock order is as follows::
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Page lock (PG_locked bit of page->flags)
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mm->page_table_lock or split pte_lock
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