[roll] Roll fuchsia [kernel][vm] CowPages preserving-page-content bit

Add a bit to the options flag in CowPages that caches if the VMO at the
root of the tree is preserving page content. Use flag in
can_root_source_evict and is_snapshot_at_least_on_write_supported to
avoid walks to root in those functions.

Original-Bug: 385005146
Run-All-Tests: True
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1181453
Original-Revision: 3834615ce2a06f2fb277a4706b9c997295eecb70
GitOrigin-RevId: b255b73efd22d3a299d852db3f2fad485e3c5461
Change-Id: I87eb647f1b15dcad72a77e3ae8aebfb37a6f5898
1 file changed
tree: c7cf5ca912f754e208b99529a3372fe459808422
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. cts
  6. firmware
  7. flower
  8. jiri.lock
  9. MILESTONE
  10. minimal
  11. prebuilts
  12. README.md
  13. stem
  14. test_durations
  15. toolchain
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.

Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance in one of the communication channels documented at get involved.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.