The dmu_object_info_t structures which are roughly 60 bytes
have been moved from the stack to the heap. Every little
bit helps and there's absolutely no reason these temporary
working variables need to be on the stack.
Native ZFS for Linux! ZFS is an advanced file system and volume manager
which was originally developed for Solaris. It has been successfully
ported to FreeBSD and now there is a functional Linux ZFS kernel port
too. The port currently includes a fully functional and stable SPA, DMU,
and ZVOL with a ZFS Posix Layer (ZPL) on the way!