diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c9f0bb8f8b21..8a1a38a51089 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2171,6 +2171,10 @@ static int f2fs_ioc_start_atomic_write(struct file *filp)
 		clear_inode_flag(fi->cow_inode, FI_INLINE_DATA);
 	} else {
 		/* Reuse the already created COW inode */
+		f2fs_bug_on(sbi, get_dirty_pages(fi->cow_inode));
+
+		invalidate_mapping_pages(fi->cow_inode->i_mapping, 0, -1);
+
 		ret = f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
 		if (ret) {
 			f2fs_up_write(&fi->i_gc_rwsem[WRITE]);