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mm: Convert __do_page_cache_readahead to XArray 

This one is trivial.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
hifive-unleashed-5.1
Matthew Wilcox 2017-12-04 04:30:18 -05:00
parent 4e17ec250f
commit 560d454bae
1 changed files with 1 additions and 3 deletions
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4
mm/readahead.c
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@ -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