mm: Convert __do_page_cache_readahead to XArray
This one is trivial.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
diff --git a/mm/readahead.c b/mm/readahead.c
index fc4dd36..f3d6f96 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -176,9 +176,7 @@ unsigned int __do_page_cache_readahead(struct address_space *mapping,
if (page_offset > end_index)
break;
- rcu_read_lock();
- page = radix_tree_lookup(&mapping->i_pages, page_offset);
- rcu_read_unlock();
+ page = xa_load(&mapping->i_pages, page_offset);
if (page && !xa_is_value(page)) {
/*
* Page already present? Kick off the current batch of