From 560d454bae08b5d5a132c5520177dede066334b7 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Mon, 4 Dec 2017 04:30:18 -0500 Subject: [PATCH] mm: Convert __do_page_cache_readahead to XArray This one is trivial. Signed-off-by: Matthew Wilcox --- mm/readahead.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index fc4dd364b37a..f3d6f9656a3c 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