4 commits

Author	SHA1	Message	Date
Qi Wang	deb8e62a83	Implement guard pages. ... Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.	2021-09-26 16:30:15 -07:00
Alex Lapenkou	6e848a005e	Remove opt_background_thread_hpa_interval_max_ms ... Now that HPA can communicate the time until its deferred work should be done, this option is not used anymore.	2021-09-17 16:56:41 -07:00
Alex Lapenkou	8229cc77c5	Wake up background threads on demand ... This change allows every allocator conforming to PAI communicate that it deferred some work for the future. Without it if a background thread goes into indefinite sleep, there is no way to notify it about upcoming deferred work.	2021-09-17 16:56:41 -07:00
David Goldblatt	1d4a7666d5	HPA: Do deferred operations on background threads.	2021-07-12 17:59:18 -07:00