[$] Reducing page structures for huge pages

Kernel development is a constant exercise in reducing overhead; anyresources taken by the kernel are not available for the workload that usersactually want to run. As part of this, the pagestructure used to manage memory has been kept as small as possible.Even so, page structures typically take up just over 1.5% of theavailable memory, which is too much for some users. LWN recently looked at DMEMFS as one approach to reducethis overhead, but that is not the only work happening in this area. Twodevelopers are currently working independently on patches to reduce theoverhead associated with huge pages in particular.