f2fs: modify the readahead method in ra_node_page()

[karo-tx-linux.git] / fs / f2fs / node.c

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index d714b607bf468bca43f9e3423b7cbc40c3400d84..7b805f7f63409bbbc2ef9be01bb4988f9d034eb2 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1084,12 +1084,11 @@ void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
                return;
        f2fs_bug_on(sbi, check_nid_range(sbi, nid));
 
-       apage = find_get_page(NODE_MAPPING(sbi), nid);
-       if (apage && PageUptodate(apage)) {
-               f2fs_put_page(apage, 0);
+       rcu_read_lock();
+       apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid);
+       rcu_read_unlock();
+       if (apage)
                return;
-       }
-       f2fs_put_page(apage, 0);
 
        apage = grab_cache_page(NODE_MAPPING(sbi), nid);
        if (!apage)