--- zzzz-none-000/linux-2.6.39.4/fs/ecryptfs/read_write.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/fs/ecryptfs/read_write.c	2021-11-10 13:38:17.000000000 +0000
@@ -40,15 +40,11 @@
 			 loff_t offset, size_t size)
 {
 	struct ecryptfs_inode_info *inode_info;
-	mm_segment_t fs_save;
 	ssize_t rc;
 
 	inode_info = ecryptfs_inode_to_private(ecryptfs_inode);
 	BUG_ON(!inode_info->lower_file);
-	fs_save = get_fs();
-	set_fs(get_ds());
-	rc = vfs_write(inode_info->lower_file, data, size, &offset);
-	set_fs(fs_save);
+	rc = kernel_write(lower_file, data, size, offset);
 	mark_inode_dirty_sync(ecryptfs_inode);
 	return rc;
 }