diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index bcc2ad4f0899..bac464f0bc59 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -1244,6 +1244,50 @@ err:
 	return error;
 }
 
+/*
+ * Grab the exclusive iolock for a data copy from src to dest, making
+ * sure to abide vfs locking order (lowest pointer value goes first) and
+ * breaking the pnfs layout leases on dest before proceeding.  The loop
+ * is needed because we cannot call the blocking break_layout() with the
+ * src iolock held, and therefore have to back out both locks.
+ */
+static int
+xfs_iolock_two_inodes_and_break_layout(
+	struct inode		*src,
+	struct inode		*dest)
+{
+	int			error;
+
+retry:
+	if (src < dest) {
+		inode_lock(src);
+		inode_lock_nested(dest, I_MUTEX_NONDIR2);
+	} else {
+		/* src >= dest */
+		inode_lock(dest);
+	}
+
+	error = break_layout(dest, false);
+	if (error == -EWOULDBLOCK) {
+		inode_unlock(dest);
+		if (src < dest)
+			inode_unlock(src);
+		error = break_layout(dest, true);
+		if (error)
+			return error;
+		goto retry;
+	}
+	if (error) {
+		inode_unlock(dest);
+		if (src < dest)
+			inode_unlock(src);
+		return error;
+	}
+	if (src > dest)
+		inode_lock_nested(src, I_MUTEX_NONDIR2);
+	return 0;
+}
+
 /*
  * Link a range of blocks from one file to another.
  */
@@ -1274,7 +1318,9 @@ xfs_reflink_remap_range(
 		return -EIO;
 
 	/* Lock both files against IO */
-	lock_two_nondirectories(inode_in, inode_out);
+	ret = xfs_iolock_two_inodes_and_break_layout(inode_in, inode_out);
+	if (ret)
+		return ret;
 	if (same_inode)
 		xfs_ilock(src, XFS_MMAPLOCK_EXCL);
 	else