Re-enable memory cgroups

[Juerg Haefliger]

Currently, the 5.4 and 5.8 raspi kernels disable the memory cgroup by default to conserve memory [1]. This is a legacy custom modification, that is no longer needed, since the memory cgroup code has been rewritten to no longer requires large amounts of memory [2]. So the custom patch can be dropped. The patch is also the reason why the LXC ADT test fails.

[1] https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-raspi/+git/focal/commit/?id=64e543b88ea2a013e1d8e014e7c92c53df1322ed
[2] https://github.com/torvalds/linux/commit/1306a85aed3ec3db98945aafb7dfbe5648a1203c

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-raspi - 5.11.0-1003.3

---------------
linux-raspi (5.11.0-1003.3) hirsute; urgency=medium

  * hirsute/linux-raspi: 5.11.0-1003.3 -proposed tracker (LP: #1917734)

  * Packaging resync (LP: #1786013)
    - [Packaging] update variants
    - [Packaging] update update.conf

  * Miscellaneous Ubuntu changes
    - [Packaging] raspi: Initial version of linux-raspi for Hirsute
    - [Config] raspi: updateconfigs after rebase to Ubuntu-5.11.0-11.12
    - [Packaging] raspi: Set disable_d_i=true in hooks.mk
    - [Packaging] raspi: Add dctrl-tools to Build-Depends
    - [Packaging] raspi: Correctly implement noudeb build profiles
    - [Packaging] raspi: remove Provides: aufs-dkms

  [ Ubuntu: 5.11.0-11.12 ]

  * hirsute/linux: 5.11.0-11.12 -proposed tracker (LP: #1917335)
  * Packaging resync (LP: #1786013)
    - update dkms package versions
    - [Packaging] update variants
  * Support no udeb profile (LP: #1916095)
    - [Packaging] replace custom filter script with dctrl-tools
    - [Packaging] correctly implement noudeb build profiles.
  * Miscellaneous Ubuntu changes
    - [Packaging] dkms-versions -- remove nvidia-graphics-drivers-440-server
    - [Debian] run ubuntu-regression-suite for linux-unstable
    - [Packaging] remove Provides: aufs-dkms
    - [Packaging] Change source package name to linux
    - [Config] update gcc version in config due to toolchain update
  * Miscellaneous upstream changes
    - Revert "UBUNTU: [Config] disable nvidia and nvidia_server builds"
    - Xen/x86: don't bail early from clear_foreign_p2m_mapping()
    - Xen/x86: also check kernel mapping in set_foreign_p2m_mapping()
    - Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages()
    - Xen/gntdev: correct error checking in gntdev_map_grant_pages()
    - xen/arm: don't ignore return errors from set_phys_to_machine
    - xen-blkback: don't "handle" error by BUG()
    - xen-netback: don't "handle" error by BUG()
    - xen-scsiback: don't "handle" error by BUG()
    - xen-blkback: fix error handling in xen_blkbk_map()
    - tty: protect tty_write from odd low-level tty disciplines
    - Bluetooth: btusb: Always fallback to alt 1 for WBS
    - media: pwc: Use correct device for DMA
    - bpf: Fix truncation handling for mod32 dst reg wrt zero
    - HID: make arrays usage and value to be the same
    - USB: quirks: sort quirk entries
    - usb: quirks: add quirk to start video capture on ELMO L-12F document camera
      reliable
    - ntfs: check for valid standard information attribute
    - Bluetooth: btusb: Some Qualcomm Bluetooth adapters stop working
    - arm64: tegra: Add power-domain for Tegra210 HDA
    - hwmon: (dell-smm) Add XPS 15 L502X to fan control blacklist
    - KVM: x86: Zap the oldest MMU pages, not the newest
    - KVM: do not assume PTE is writable after follow_pfn
    - mm: provide a saner PTE walking API for modules
    - KVM: Use kvm_pfn_t for local PFN variable in hva_to_pfn_remapped()

 -- Juerg Haefliger <email address hidden> Thu, 04 Mar 2021 14:42:19 +0100

[Brian Murray (brian-murray)]

The Groovy Gorilla has reached end of life, so this bug will not be fixed for that release