From: Matthew Wilcox
Getting rid of the m_perag_lock lets us also get rid of the call to
radix_tree_preload(). This is a relatively naive conversion; we could
improve performance over the radix tree implementation by passing around
xa_state pointers instead of indices,
From: Matthew Wilcox
Getting rid of the m_perag_lock lets us also get rid of the call to
radix_tree_preload(). This is a relatively naive conversion; we could
improve performance over the radix tree implementation by passing around
xa_state pointers instead of indices, possibly at the expense
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