diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 2bec936174e2..3a974e2637aa 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1771,9 +1771,10 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag)
 		if (map->m_flags & F2FS_MAP_MAPPED) {
 			unsigned int ofs = start_pgofs - map->m_lblk;
 
-			f2fs_update_read_extent_cache_range(&dn,
-				start_pgofs, map->m_pblk + ofs,
-				map->m_len - ofs);
+			if (map->m_len > ofs)
+				f2fs_update_read_extent_cache_range(&dn,
+					start_pgofs, map->m_pblk + ofs,
+					map->m_len - ofs);
 		}
 		if (map->m_next_extent)
 			*map->m_next_extent = is_hole ? pgofs + 1 : pgofs;