diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 9b6efc8f769e..d62fc4543760 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4760,6 +4760,21 @@ static long ext4_zero_range(struct file *file, loff_t offset,
 	/* Zero range excluding the unaligned edges */
 	align_start = round_up(offset, blocksize);
 	align_end = round_down(end, blocksize);
+
+	/*
+	 * In WRITE_ZEROES mode, edges that were not partial-zeroed (clean
+	 * unwritten or hole) must be allocated and zeroed as whole blocks.
+	 * Expand the aligned range outward to cover them.
+	 */
+	if (mode & FALLOC_FL_WRITE_ZEROES) {
+		if (!IS_ALIGNED(offset, blocksize) &&
+		    !(partial_zeroed & EXT4_PARTIAL_ZERO_START))
+			align_start = round_down(offset, blocksize);
+		if (!IS_ALIGNED(end, blocksize) &&
+		    !(partial_zeroed & EXT4_PARTIAL_ZERO_END))
+			align_end = round_up(end, blocksize);
+	}
+
 	if (align_end > align_start) {
 		if (mode & FALLOC_FL_WRITE_ZEROES)
 			flags = EXT4_GET_BLOCKS_CREATE_ZERO | EXT4_EX_NOCACHE;