Hi Dan, maybe I'm missing something, but it seems like we release the reference to the previously found pgmap before passing it to get_dev_pagemap again. Can you check if my findings make sense? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>