diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 0686306ed988..5bce20005add 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -503,6 +503,16 @@ static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio,
 					block_t last_blkaddr,
 					block_t cur_blkaddr)
 {
+	if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) {
+		unsigned int filled_blocks =
+				F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size);
+		unsigned int io_size = F2FS_IO_SIZE(sbi);
+		unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt;
+
+		/* IOs in bio is aligned and left space of vectors is not enough */
+		if (!(filled_blocks % io_size) && left_vecs < io_size)
+			return false;
+	}
 	if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr))
 		return false;
 	return io_type_is_mergeable(io, fio);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 78a1b873e48a..720f2e6d6f0a 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -3202,7 +3202,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 	if (err)
 		goto free_bio_info;
 
-	if (F2FS_IO_SIZE(sbi) > 1) {
+	if (F2FS_IO_ALIGNED(sbi)) {
 		sbi->write_io_dummy =
 			mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi) - 1), 0);
 		if (!sbi->write_io_dummy) {
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 65559900d4d7..52af9ac164b4 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -41,6 +41,7 @@
 #define F2FS_IO_SIZE_BYTES(sbi)	(1 << (F2FS_OPTION(sbi).write_io_size_bits + 12)) /* B */
 #define F2FS_IO_SIZE_BITS(sbi)	(F2FS_OPTION(sbi).write_io_size_bits) /* power of 2 */
 #define F2FS_IO_SIZE_MASK(sbi)	(F2FS_IO_SIZE(sbi) - 1)
+#define F2FS_IO_ALIGNED(sbi)	(F2FS_IO_SIZE(sbi) > 1)
 
 /* This flag is used by node and meta inodes, and by recovery */
 #define GFP_F2FS_ZERO		(GFP_NOFS | __GFP_ZERO)