CVSROOT: /cvs
Module name: src
Changes by: b...@cvs.openbsd.org 2019/12/31 18:50:00
Modified files:
sys/uvm : uvm_pmemrange.c
Log message:
Add uvm_pmr_remove_1strange_reverse to efficiently free pages
in reverse order from uvm. Use it in uvm_pmr_freepageq when the
pages appear to be in reverse order.
This greatly improves cases of massive page freeing as noticed by
mlarkin@ in his ongoing efforts to have the most gigantish buffer
cache on the planet.
Most of this work done by me with help and polish from kettenis@
at e2k19. Follow on commits to this will make use of this for
more efficient freeing of amaps and a few other things.
ok kettenis@ deraadt@
