f2fs: add help function META_MAPPING

Introduce help function META_MAPPING() to get the cache meta blocks'
address space.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index e82423fbcb9d..7caac5f2ca9e 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1585,7 +1585,7 @@ static int build_curseg(struct f2fs_sb_info *sbi)
 
 static int ra_sit_pages(struct f2fs_sb_info *sbi, int start, int nrpages)
 {
-        struct address_space *mapping = sbi->meta_inode->i_mapping;
+        struct address_space *mapping = META_MAPPING(sbi);
         struct page *page;
         block_t blk_addr, prev_blk_addr = 0;
         int sit_blk_cnt = SIT_BLK_CNT(sbi);