Anonymous Page Cache

Anonymous Page Cache gives backstores to anonymous pages. For those dynamically generated but rarely used/modified data structures, it tries to save them on disk and load them on demand. The idea is similar to a swap file except:

• It's in userland and requires no special privilege.
• The timing and scope to save/swap out is determined by programmer, rather than OS.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=899493
• https://groups.google.com/forum/#!topic/mozilla.dev.b2g/QNLuHylCOlU