I got around to implementing this and merged it into the unstable branch. See commit 7f38858c0c19db36c5ecf36cb4d333579981c811. From my limited testing it seems to work fine. Currently it only triggers via the librados C interface (currently the only place where there is a user provided buffer). Eventually libceph/Client.h should be updated to do the same, but it's a bit more involved. sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html