openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

mm: Convert __do_page_cache_readahead to XArray 

This one is trivial.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox 2017-12-04 04:30:18 -05:00
parent 4e17ec250f
commit 560d454bae
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
mm/readahead.c
View File

@ -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