diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 08815394223a..fa5398ac4505 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -4196,7 +4196,7 @@ static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
 	if (WARN_ON_ONCE(map.m_pblk == COMPRESS_ADDR))
 		return -EINVAL;
 
-	if (map.m_pblk != NULL_ADDR) {
+	if (map.m_flags & F2FS_MAP_MAPPED) {
 		iomap->length = blks_to_bytes(inode, map.m_len);
 		iomap->type = IOMAP_MAPPED;
 		iomap->flags |= IOMAP_F_MERGED;