From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
This one is trivial.
Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
---
mm/readahead.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/mm/readahead.c b/mm/readahead.c
index 59998ca31f2a..07f9734dc79f 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -174,9 +174,7 @@ 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
--
2.17.1
